Skip to content
Neptunian Marine
Neptunian Marine

Sailing - Blocks

Filters

$
$
Save $23.10 Save $0.00

Ronstan Series 75 Core Block - Single [RF74100]

Ronstan
$154.00
$154.00 - $154.00
$154.00
$130.90
$130.90 - $130.90
$130.90
Low stock

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

View full details
$154.00
$154.00 - $154.00
$154.00
$130.90
$130.90 - $130.90
$130.90
Save $23.10 Save $0.00
Save $11.85 Save $0.00

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

Ronstan
$79.00
$79.00 - $79.00
$79.00
$67.15
$67.15 - $67.15
$67.15
In stock

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

View full details
$79.00
$79.00 - $79.00
$79.00
$67.15
$67.15 - $67.15
$67.15
Save $11.85 Save $0.00
Save $5.84 Save $0.00

Ronstan Series 50 All Purpose Block - Single - Universal Head [RF51100]

Ronstan
$38.95
$38.95 - $38.95
$38.95
$33.11
$33.11 - $33.11
$33.11
Low stock

Series 50 All Purpose Block - Single - Universal HeadAll purpose (AP) blocks are a great all around solution. Self-lubricating Acetal polymer shea...

View full details
$38.95
$38.95 - $38.95
$38.95
$33.11
$33.11 - $33.11
$33.11
Save $5.84 Save $0.00
Save $15.02 Save $0.00

Ronstan Series 55 Ratchet Orbit Block - Single - Swivel Head - Auto & Manual [RF56100]

Ronstan
$100.18
$100.18 - $100.18
$100.18
$85.16
$85.16 - $85.16
$85.16
Low stock

Series 55 Ratchet Orbit Block™ - Single - Swivel Head - Auto & ManualAutomatic Ratchet BlockNow you can enjoy the flexibility of setting up yo...

View full details
$100.18
$100.18 - $100.18
$100.18
$85.16
$85.16 - $85.16
$85.16
Save $15.02 Save $0.00
Save $0.99 Save $0.00

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

Ronstan
$8.98
$8.98 - $8.98
$8.98
$7.99
$7.99 - $7.99
$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...

View full details
$8.98
$8.98 - $8.98
$8.98
$7.99
$7.99 - $7.99
$7.99
Save $0.99 Save $0.00
Save $3.96 Save $0.00

Lewmar 60mm Synchro Block - Single [29926001BK]

Lewmar
$51.95
$51.95 - $51.95
$51.95
$47.99
$47.99 - $47.99
$47.99
Low stock

60mm Synchro Block - SingleLewmar's Synchro Blocks are engineered for speed, efficiency, and superior handling.  Using a combination of scientific...

View full details
$51.95
$51.95 - $51.95
$51.95
$47.99
$47.99 - $47.99
$47.99
Save $3.96 Save $0.00
Save $62.81 Save $0.00

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

Harken
$233.80
$233.80 - $233.80
$233.80
$170.99
$170.99 - $170.99
$170.99
Low stock

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

View full details
$233.80
$233.80 - $233.80
$233.80
$170.99
$170.99 - $170.99
$170.99
Save $62.81 Save $0.00
Save $10.15 Save $0.00

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

Harken
$86.10
$86.10 - $86.10
$86.10
$75.95
$75.95 - $75.95
$75.95
Low stock

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

View full details
$86.10
$86.10 - $86.10
$86.10
$75.95
$75.95 - $75.95
$75.95
Save $10.15 Save $0.00
Save $11.90 Save $0.00

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

Harken
$101.85
$101.85 - $101.85
$101.85
$89.95
$89.95 - $89.95
$89.95
Low stock

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

View full details
$101.85
$101.85 - $101.85
$101.85
$89.95
$89.95 - $89.95
$89.95
Save $11.90 Save $0.00
Save $6.30 Save $0.00

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

Harken
$54.25
$54.25 - $54.25
$54.25
$47.95
$47.95 - $47.95
$47.95
Low stock

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

View full details
$54.25
$54.25 - $54.25
$54.25
$47.95
$47.95 - $47.95
$47.95
Save $6.30 Save $0.00
Save $9.75 Save $0.00

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

Harken
$85.70
$85.70 - $85.70
$85.70
$75.95
$75.95 - $75.95
$75.95
Low stock

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

View full details
$85.70
$85.70 - $85.70
$85.70
$75.95
$75.95 - $75.95
$75.95
Save $9.75 Save $0.00
Save $17.10 Save $0.00

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

Harken
$143.05
$143.05 - $143.05
$143.05
$125.95
$125.95 - $125.95
$125.95
Low stock

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

View full details
$143.05
$143.05 - $143.05
$143.05
$125.95
$125.95 - $125.95
$125.95
Save $17.10 Save $0.00
Save $6.95 Save $0.00

Harken 16mm Triple Block [408]

Harken
$56.90
$56.90 - $56.90
$56.90
$49.95
$49.95 - $49.95
$49.95
Low 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...

View full details
$56.90
$56.90 - $56.90
$56.90
$49.95
$49.95 - $49.95
$49.95
Save $6.95 Save $0.00
Save $5.50 Save $0.00

Harken 29mm Double Carbo Air Block [381]

Harken
$49.45
$49.45 - $49.45
$49.45
$43.95
$43.95 - $43.95
$43.95
Low stock

29mm Double Carbo Air BlockLow-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black ...

View full details
$49.45
$49.45 - $49.45
$49.45
$43.95
$43.95 - $43.95
$43.95
Save $5.50 Save $0.00

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

Harken
$152.70 - $152.70
$152.70
$152.70 - $152.70
$152.70
Low stock

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

View full details
$152.70 - $152.70
$152.70
$152.70 - $152.70
$152.70
Save $5.10 Save $0.00

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

Harken
$44.05
$44.05 - $44.05
$44.05
$38.95
$38.95 - $38.95
$38.95
Low stock

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

View full details
$44.05
$44.05 - $44.05
$44.05
$38.95
$38.95 - $38.95
$38.95
Save $5.10 Save $0.00
Save $5.75 Save $0.00

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

Harken
$47.70
$47.70 - $47.70
$47.70
$41.95
$41.95 - $41.95
$41.95
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...

View full details
$47.70
$47.70 - $47.70
$47.70
$41.95
$41.95 - $41.95
$41.95
Save $5.75 Save $0.00
Save $4.20 Save $0.00

Harken 40mm Carbo Air Cheek Block [2644]

Harken
$40.15
$40.15 - $40.15
$40.15
$35.95
$35.95 - $35.95
$35.95
In stock

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

View full details
$40.15
$40.15 - $40.15
$40.15
$35.95
$35.95 - $35.95
$35.95
Save $4.20 Save $0.00
Save $5.00 Save $0.00

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

Ronstan
$33.38
$33.38 - $33.38
$33.38
$28.38
$28.38 - $28.38
$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...

View full details
$33.38
$33.38 - $33.38
$33.38
$28.38
$28.38 - $28.38
$28.38
Save $5.00 Save $0.00
Save $2.46 Save $0.00

Ronstan Series 20 Ball Bearing Orbit Block - Single - Dyneema Lashing - Becket Option [RF25109]

Ronstan
$16.45
$16.45 - $16.45
$16.45
$13.99
$13.99 - $13.99
$13.99
In stock

Series 20 Ball Bearing Orbit Block - Single - Dyneema Lashing - Becket OptionThe incredible Series 20 Orbit Block™ is capable of loads up to 250kg...

View full details
$16.45
$16.45 - $16.45
$16.45
$13.99
$13.99 - $13.99
$13.99
Save $2.46 Save $0.00
Save $5.90 Save $0.00

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

Harken
$51.85
$51.85 - $51.85
$51.85
$45.95
$45.95 - $45.95
$45.95
Low stock

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

View full details
$51.85
$51.85 - $51.85
$51.85
$45.95
$45.95 - $45.95
$45.95
Save $5.90 Save $0.00
Save $4.96 Save $0.00

Lewmar 50mm Synchro Block - Single [29925001BK]

Lewmar
$39.95
$39.95 - $39.95
$39.95
$34.99
$34.99 - $34.99
$34.99
Low stock

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

View full details
$39.95
$39.95 - $39.95
$39.95
$34.99
$34.99 - $34.99
$34.99
Save $4.96 Save $0.00
Save $7.90 Save $0.00

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

Ronstan
$52.66
$52.66 - $52.66
$52.66
$44.76
$44.76 - $44.76
$44.76
Low stock

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

View full details
$52.66
$52.66 - $52.66
$52.66
$44.76
$44.76 - $44.76
$44.76
Save $7.90 Save $0.00
Save $11.65 Save $0.00

Harken 38mm Double Big Bullet Block [127]

Harken
$100.60
$100.60 - $100.60
$100.60
$88.95
$88.95 - $88.95
$88.95
Low stock

38mm Double Big Bullet BlockLow-friction Bullet blocks lead control lines aft. They are compact and lightweight, with fast trim and release under ...

View full details
$100.60
$100.60 - $100.60
$100.60
$88.95
$88.95 - $88.95
$88.95
Save $11.65 Save $0.00