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Neptunian Marine
Neptunian Marine

Sailing - Blocks

Ronstan Series 25 Utility Block - Single - Swivel Shackle Head [RF573]

Ronstan
Original price $23.14
Original price $23.14 - Original price $23.14
Original price $23.14
Current price $19.99
$19.99 - $19.99
Current price $19.99
In stock

Series 25 Utility Block™ - Single - Swivel Shackle HeadStainless steel cheeks and Acetal sheaves ensure a long service life with virtually no main...

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Original price $23.14
Original price $23.14 - Original price $23.14
Original price $23.14
Current price $19.99
$19.99 - $19.99
Current price $19.99
Save $3.15 Save $0.00

SeaSure Tiller Lock Gun - Grey [19.27]

SeaSure
Original price $90.09
Original price $90.09 - Original price $90.09
Original price $90.09
Current price $73.99
$73.99 - $73.99
Current price $73.99
Low stock

Tiller Lock Gun - GreyThis tiller lock maintains the rugged reliability of the original and brings the design fully up to date. Design suitable fo...

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Original price $90.09
Original price $90.09 - Original price $90.09
Original price $90.09
Current price $73.99
$73.99 - $73.99
Current price $73.99
Save $16.10 Save $0.00

Schaefer Single Aluminum Block - 51mm Sheave [504-05]

Schaefer Marine
Original price $82.85
Original price $82.85 - Original price $82.85
Original price $82.85
Current price $71.99
$71.99 - $71.99
Current price $71.99
Low stock

Single Aluminum Block - 51mm SheaveSingle block with anodized aluminum cheeks. Delrin™ sheave ensures smooth operation with high safe working load...

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Original price $82.85
Original price $82.85 - Original price $82.85
Original price $82.85
Current price $71.99
$71.99 - $71.99
Current price $71.99
Save $10.86 Save $0.00

Schaefer Series 5 Flat Base/Alum Cheek/Delrin Sheave [504-11]

Schaefer Marine
Original price $98.90
Original price $98.90 - Original price $98.90
Original price $98.90
Current price $85.99
$85.99 - $85.99
Current price $85.99
Low stock

Series 5 Flat Base/Alum Cheek/Delrin SheaveDelrin™ sheave ensures smooth operation and high safe working load. Stainless steel base distributes lo...

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Original price $98.90
Original price $98.90 - Original price $98.90
Original price $98.90
Current price $85.99
$85.99 - $85.99
Current price $85.99
Save $12.91 Save $0.00

Schaefer Stand-Up Swivel - Aluminum Block [704-62]

Schaefer Marine
Original price $248.75
Original price $248.75 - Original price $248.75
Original price $248.75
Current price $191.99
$191.99 - $191.99
Current price $191.99
Low stock

Stand-Up Swivel - Aluminum BlockSpecifications: Sheave Dia. 2-2/8" (60 mm) Max Line 1/2" (13 mm) Diameter includes urethane base 3-3/8" (86 mm) He...

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Original price $248.75
Original price $248.75 - Original price $248.75
Original price $248.75
Current price $191.99
$191.99 - $191.99
Current price $191.99
Save $56.76 Save $0.00

Schaefer Series 3 Flat Base/Alum Cheek/Delrin Sheave [303-09]

Schaefer Marine
Original price $80.30
Original price $80.30 - Original price $80.30
Original price $80.30
Current price $69.99
$69.99 - $69.99
Current price $69.99
Low stock

Series 3 Flat Base/Alum Cheek/Delrin SheaveDelrin™ plain bearing sheave ensures smooth operation and high safe working load. Stainless Steel base ...

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Original price $80.30
Original price $80.30 - Original price $80.30
Original price $80.30
Current price $69.99
$69.99 - $69.99
Current price $69.99
Save $10.31 Save $0.00

Ronstan Series 75 Core Block - Single [RF74100]

Ronstan
Original price $154.00
Original price $154.00 - Original price $154.00
Original price $154.00
Current price $130.90
$130.90 - $130.90
Current price $130.90
In stock

Series 75 Core Block™ - SingleCore Blocks™ are a true all round solution. A tuned 2-stage bearing system provides excellent performance across the...

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Original price $154.00
Original price $154.00 - Original price $154.00
Original price $154.00
Current price $130.90
$130.90 - $130.90
Current price $130.90
Save $23.10 Save $0.00

Ronstan Series 40 Ratchet Orbit Block - Single - Auto - Swivel Shackle Head [RF46100]

Ronstan
Original price $79.00
Original price $79.00 - Original price $79.00
Original price $79.00
Current price $67.15
$67.15 - $67.15
Current price $67.15
In stock

Series 40 Ratchet Orbit Block™ - Single - Auto - Swivel Shackle HeadAutomatic RatchetWith automatic models, the ratchet mechanism engages when loa...

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Original price $79.00
Original price $79.00 - Original price $79.00
Original price $79.00
Current price $67.15
$67.15 - $67.15
Current price $67.15
Save $11.85 Save $0.00

Ronstan Series 40 AP Sheave - Acetal Solid Bearing - 40mm (1-9/16")OD [RF41000]

Ronstan
Original price $8.98
Original price $8.98 - Original price $8.98
Original price $8.98
Current price $7.99
$7.99 - $7.99
Current price $7.99
In stock

Series 40 AP Sheave - Acetal Solid Bearing - 40mm(1-9/16")ODPrecision moulded Acetal sheaves running on Acetal or Torlon® ball bearings provide hi...

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Original price $8.98
Original price $8.98 - Original price $8.98
Original price $8.98
Current price $7.99
$7.99 - $7.99
Current price $7.99
Save $0.99 Save $0.00

Harken 57mm Quad Block Swivel, Center Becket [HSB380]

Harken
Original price $239.65
Original price $239.65 - Original price $239.65
Original price $239.65
Current price $175.99
$175.99 - $175.99
Current price $175.99
Low stock

57mm Quad Block Swivel, Center BecketLow-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to our popular Har...

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Original price $239.65
Original price $239.65 - Original price $239.65
Original price $239.65
Current price $175.99
$175.99 - $175.99
Current price $175.99
Save $63.66 Save $0.00

Harken 40mm Carbo Single Ratchet Block w/Swivel Becket [2609]

Harken
Original price $88.25
Original price $88.25 - Original price $88.25
Original price $88.25
Current price $77.95
$77.95 - $77.95
Current price $77.95
Low stock

40mm Carbo Single Ratchet Block with Swivel & BecketCarbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding p...

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Original price $88.25
Original price $88.25 - Original price $88.25
Original price $88.25
Current price $77.95
$77.95 - $77.95
Current price $77.95
Save $10.30 Save $0.00

Harken 57mm Carbo Single Ratchet Block w/Swivel Becket [2136]

Harken
Original price $104.40
Original price $104.40 - Original price $104.40
Original price $104.40
Current price $91.95
$91.95 - $91.95
Current price $91.95
Low stock

57mm Carbo Single Ratchet Block with Swivel & BecketCarbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding p...

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Original price $104.40
Original price $104.40 - Original price $104.40
Original price $104.40
Current price $91.95
$91.95 - $91.95
Current price $91.95
Save $12.45 Save $0.00

Harken 40mm/29mm Carbo Traveler Block [2649]

Harken
Original price $55.60
Original price $55.60 - Original price $55.60
Original price $55.60
Current price $48.95
$48.95 - $48.95
Current price $48.95
Low stock

40mm/29mm Carbo Traveler BlockLow-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Bla...

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Original price $55.60
Original price $55.60 - Original price $55.60
Original price $55.60
Current price $48.95
$48.95 - $48.95
Current price $48.95
Save $6.65 Save $0.00

Harken 40mm Carbo Air Double Fixed Block w/Becket [2643]

Harken
Original price $87.85
Original price $87.85 - Original price $87.85
Original price $87.85
Current price $77.95
$77.95 - $77.95
Current price $77.95
In stock

40mm Carbo Air Double Fixed Block with BecketLow-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the pop...

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Original price $87.85
Original price $87.85 - Original price $87.85
Original price $87.85
Current price $77.95
$77.95 - $77.95
Current price $77.95
Save $9.90 Save $0.00

Harken 40mm Carbo Air Block w/Cam Cleat Becket [2646]

Harken
Original price $146.65
Original price $146.65 - Original price $146.65
Original price $146.65
Current price $128.95
$128.95 - $128.95
Current price $128.95
Low stock

40mm Carbo Air Block with Cam Cleat & BecketLow-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the ...

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Original price $146.65
Original price $146.65 - Original price $146.65
Original price $146.65
Current price $128.95
$128.95 - $128.95
Current price $128.95
Save $17.70 Save $0.00

Harken 16mm Triple Block [408]

Harken
Original price $58.30
Original price $58.30 - Original price $58.30
Original price $58.30
Current price $51.95
$51.95 - $51.95
Current price $51.95
In stock

16mm Triple BlockThe 16 mm is Harken’s smallest block. It is perfect for small synthetic control lines found on high-tech dinghies. The patented b...

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Original price $58.30
Original price $58.30 - Original price $58.30
Original price $58.30
Current price $51.95
$51.95 - $51.95
Current price $51.95
Save $6.35 Save $0.00

Harken 60mm Double Aluminum Element Block w/Swivel Becket [6270]

Harken
Original price $156.50 - Original price $156.50
Original price
$156.50
$156.50 - $156.50
Current price $156.50
Low stock

60mm Double Aluminum Element Block with Swivel & BecketElement blocks introduce sideplates that combine forged aluminum and compound curves fo...

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Original price $156.50 - Original price $156.50
Original price
$156.50
$156.50 - $156.50
Current price $156.50

Harken 22mm Double Micro Block w/Becket [227]

Harken
Original price $45.15
Original price $45.15 - Original price $45.15
Original price $45.15
Current price $39.95
$39.95 - $39.95
Current price $39.95
Low stock

22mm Double Micro Block with BecketLow-friction Micro blocks are compact and lightweight. Specifications: Sheave: 22mm / 7/8in. Length: 64mm / 2.5...

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Original price $45.15
Original price $45.15 - Original price $45.15
Original price $45.15
Current price $39.95
$39.95 - $39.95
Current price $39.95
Save $5.20 Save $0.00

Harken 22mm Fiddle Micro Block w/V-Jam [244]

Harken
Original price $48.90
Original price $48.90 - Original price $48.90
Original price $48.90
Current price $42.95
$42.95 - $42.95
Current price $42.95
Low stock

22mm Fiddle Micro Block with V-JamLow-friction Micro blocks are compact and lightweight. They are ideal for sailboards, smaller dinghies, and ligh...

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Original price $48.90
Original price $48.90 - Original price $48.90
Original price $48.90
Current price $42.95
$42.95 - $42.95
Current price $42.95
Save $5.95 Save $0.00

Harken 40mm Carbo Air Cheek Block [2644]

Harken
Original price $41.15
Original price $41.15 - Original price $41.15
Original price $41.15
Current price $35.95
$35.95 - $35.95
Current price $35.95
Low stock

40mm Carbo Air Cheek BlockLow-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black M...

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Original price $41.15
Original price $41.15 - Original price $41.15
Original price $41.15
Current price $35.95
$35.95 - $35.95
Current price $35.95
Save $5.20 Save $0.00

Ronstan Series 30 Ball Bearing Orbit Block - Stand Up Swivel [RF35140]

Ronstan
Original price $33.38
Original price $33.38 - Original price $33.38
Original price $33.38
Current price $28.38
$28.38 - $28.38
Current price $28.38
In stock

Series 30 Ball Bearing Orbit Block™ - Stand Up SwivelBall Bearing Orbit Blocks™ boast the highest strength-to-weight ratio available. This is ach...

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Original price $33.38
Original price $33.38 - Original price $33.38
Original price $33.38
Current price $28.38
$28.38 - $28.38
Current price $28.38
Save $5.00 Save $0.00

Harken 22mm Fiddle Micro Block w/V-Jam Becket [245]

Harken
Original price $53.15
Original price $53.15 - Original price $53.15
Original price $53.15
Current price $46.95
$46.95 - $46.95
Current price $46.95
Low stock

22mm Fiddle Micro Block with V-Jam & BecketLow-friction Micro blocks are compact and lightweight. They are ideal for sailboards, smaller dingh...

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Original price $53.15
Original price $53.15 - Original price $53.15
Original price $53.15
Current price $46.95
$46.95 - $46.95
Current price $46.95
Save $6.20 Save $0.00

Lewmar 50mm Synchro Block - Single [29925001BK]

Lewmar
Original price $39.95
Original price $39.95 - Original price $39.95
Original price $39.95
Current price $34.99
$34.99 - $34.99
Current price $34.99
Low stock

50mm Synchro Block - SingleLewmar's Synchro Blocks are engineered for speed, efficiency, and superior handling.  Using a combination of scientific...

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Original price $39.95
Original price $39.95 - Original price $39.95
Original price $39.95
Current price $34.99
$34.99 - $34.99
Current price $34.99
Save $4.96 Save $0.00

Ronstan Series 50 Ball Bearing Block - Single Loop Top [RF50101]

Ronstan
Original price $52.66
Original price $52.66 - Original price $52.66
Original price $52.66
Current price $44.76
$44.76 - $44.76
Current price $44.76
In stock

Series 50 Ball Bearing Block - Single Loop TopSheaves running on Acetal or Torlon® ball bearings provide high performance & low friction. The ...

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Original price $52.66
Original price $52.66 - Original price $52.66
Original price $52.66
Current price $44.76
$44.76 - $44.76
Current price $44.76
Save $7.90 Save $0.00