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Everything about marine blocks. Discover ball-bearing pulleys, ratchet blocks, fiddle blocks, and deck organizers at Marine-Outlet.

34 Products
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Optiparts 16 MM HARKEN MICRO BLOCK
Optiparts
Ball bearing 16mm Harken micro block with stainless steel cheeks.

Sheave diameter: 16 mm
Max line diameter: 5 mm
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Ball bearing 16mm Harken micro block with stainless steel cheeks.

She...
€19,50 €16,12
 
 
WINDESIGN CLEW SLEEVE FOR LASER®/ILCA
WINDESIGN
Clew sleeve for Laser® and ILCA®. The stainless steel sleeve will be fixed to the Laser®/ILCA® boom and does not have to be detached after sailing... More
Clew sleeve for Laser® and ILCA®. The stainless steel sleeve will be...
€42,25 €34,92
 
 
Optiparts SMALL BLOCK STANDARD OPTI MAST WITH DEADEYE
Optiparts
Plain bearing halyard block as used on Optimist School mast. With stainless steel cheeks, nylon 22 mm sheave and becket.

Breaking load: 350 kg
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Plain bearing halyard block as used on Optimist School mast. With stai...
€6,50 €5,37
 
 
WINDESIGN 20 MM BALL BEARING BLOCK
WINDESIGN
20 mm ball bearing block as supplied with the Laser® / ILCA® power pack.

Sheave diameter: 20 mm
Max line diameter: 6 mm

Not allowed for use in off...
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20 mm ball bearing block as supplied with the Laser® / ILCA® power p...
€15,95 €13,18
 
 
WINDESIGN DOUBLE DECK EYE WITH 29 MM HARKEN BLOCKS
WINDESIGN
Stainless steel double pad eye for Laser® / ILCA® outhaul and cunningham upgrade. Supplied with 29 mm ball bearing Harken blocks.

Not allowed for u...
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Stainless steel double pad eye for Laser® / ILCA® outhaul and cunnin...
€63,75 €52,69
 
 
Optiparts SHEET SET RACE
Optiparts
Complete Optimist mainsheet system for racing Optimist.

1 x 8 mm 6 meter polypropylene mainsheet (EX1377)
1 x 57 mm ratchet block (EX1299)
1 x 38 mm ...
More
Complete Optimist mainsheet system for racing Optimist.

1 x 8 mm 6 me...
€120,50 €99,59
 
 
Optiparts STANDARD SHEET BLOCK WITH DEADEYE
Optiparts
Standard blocks with stainless steel cheeks and nylon sheave. Sheave diameter 34 mm.

For ropes up to 10 mm.
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Standard blocks with stainless steel cheeks and nylon sheave. Sheave d...
€8,95 €7,40
 
 
Optiparts 2 WEG CONNECTOR
Optiparts
2 way link, can be used on EX1295 and EX1299 ratchet blocks. More
2 way link, can be used on EX1295 and EX1299 ratchet blocks.
€9,95 €8,22
 
 
WINDESIGN MAINSHEET BLOCK
WINDESIGN
Classic Laser® and ILCA® plain bearing mainsheet block to fit on the boom.

Sheave diameter: 40 mm
Max line diameter: 10 mm

This product is compati...
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Classic Laser® and ILCA® plain bearing mainsheet block to fit on the...
€12,50 €10,33
 
 
WINDESIGN LOW FRICTION RING 25 MM
WINDESIGN
The lightweight alternative to a block, with no moving parts these are an extremely low maintainance item. Unlike some other manufacturers our rings ... More
The lightweight alternative to a block, with no moving parts these are...
€14,50 €11,98
 
 
Optiparts 38 MM BALL BEARING BLOCK WITH DEADEYE
Optiparts
Ball bearing blocks with 38 mm Delrin sheave, cheeks and bearings. With stainless steel load straps.

For ropes up to 10 mm.
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Ball bearing blocks with 38 mm Delrin sheave, cheeks and bearings. Wit...
€17,50 €14,46
 
 
WINDESIGN HARKEN 29 MM CARBO BLOCK WITH BOLT
WINDESIGN
Upgrade the builders supplied Laser® / ILCA® control line blocks to 29 mm Harken blocks. The 29 mm Harken blocks can be bolted on the existing block... More
Upgrade the builders supplied Laser® / ILCA® control line blocks to ...
€24,50 €20,25
 
 
Optiparts 34/20 MM VIOLIN BLOCK WITH EX1372 SNAP SHACKLE
Optiparts
Plain bearing block with nylon cheeks and acetal sheaves with EX1372 snap shackle. Lightweight, very strong and affordable. This mainsheet block is... More
Plain bearing block with nylon cheeks and acetal sheaves with EX1372 ...
€24,75 €20,45
 
 
WINDESIGN ¢€œROPE LINKED¢€ OVERLAP BLOCKS
WINDESIGN
Classic plain bearing Laser® / ILCA® traveler block. Features a Dyneema rope link instead of the standard clips. Super lightweight and strong.

Shea...
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Classic plain bearing Laser® / ILCA® traveler block. Features a Dyne...
€28,25 €23,35
 
 
Optiparts SHEET SET
Optiparts
Complete mainsheet system for SCHOOL Optimists.

1 x 8 mm 6 meter polypropylene mainsheet (EX1377)
1 x 34 mm plain bearing fiddle block (EX1325)
1 x 3...
More
Complete mainsheet system for SCHOOL Optimists.

1 x 8 mm 6 meter poly...
€45,95 €37,98
 
 
Optiparts SMALL BLOCK STANDARD OPTI MAST
Optiparts
Plain bearing halyard block as used on Optimist School mast. With stainless steel cheeks and nylon 22 mm sheave.

Breaking load: 350 kg
More
Plain bearing halyard block as used on Optimist School mast. With stai...
€5,75 €4,75
 
 
Optiparts STANDARD SHEET BLOCK
Optiparts
Standard blocks with stainless steel cheeks and nylon sheave. Sheave diameter 34 mm.

For ropes up to 10 mm.
More
Standard blocks with stainless steel cheeks and nylon sheave. Sheave d...
€7,50 €6,20
 
 
Optiparts 34 MM BLOCK
Optiparts
Plain bearing block with nylon cheeks and acetal sheave. Lightweight, very affordable mainsheet block, designed for Optimists and other small dinghies... More
Plain bearing block with nylon cheeks and acetal sheave. Lightweight, ...
€7,75 €6,41
 
 
Optiparts MICRO BLOCK STANDARD
Optiparts
Plain bearing Optimist halyard block as used on Optimist Silver masts. With stainless steel cheeks and nylon 19 mm sheave. More
Plain bearing Optimist halyard block as used on Optimist Silver masts....
€10,95 €9,05
 
 
Optiparts 34 MM BLOCK WITH DEADEYE
Optiparts
Plain bearing block with nylon cheeks and acetal sheaves. Lightweight, very affordable mainsheet block designed for Optimists and other small dinghies... More
Plain bearing block with nylon cheeks and acetal sheaves. Lightweight,...
€11,50 €9,50
 
 
WINDESIGN OVERLAP BLOCK SMALL WITH CONNECTOR
WINDESIGN
Classic Laser® and ILCA® traveler block. Plain bearing. Used in combination with the EX2152 large traveler block.

Sheave diameter: 28 mm
Max line d...
More
Classic Laser® and ILCA® traveler block. Plain bearing. Used in comb...
€12,50 €10,33
 
 
Optiparts 34/20 MM VIOLIN BLOCK
Optiparts
Plain bearing fiddle block with nylon cheeks and acetal sheaves. Lightweight, very affordable mainsheet block designed for Optimists and other small d... More
Plain bearing fiddle block with nylon cheeks and acetal sheaves. Light...
€13,25 €10,95
 
 
Optiparts 38 MM BALL BEARING BLOCK
Optiparts
Ball bearing blocks with 38 mm Delrin sheave, cheeks and bearings. With stainless steel load straps.

For ropes up to 10 mm.
More
Ball bearing blocks with 38 mm Delrin sheave, cheeks and bearings. Wit...
€14,95 €12,36
 
 
Optiparts REPLACEMENT LINE FOR EX1314
Optiparts
Replacement line for EX1314 mainsheet extender. Spliced from 3 mm Dyneema. More
Replacement line for EX1314 mainsheet extender. Spliced from 3 mm Dyne...
€15,75 €13,02
 
 
Showing 1 - 24 of 34

Marine Blocks & Pulleys

Blocks, ratchet pulleys, and halyard blocks for smooth line handling

A reliable block system is essential for smooth and efficient control of sheets, halyards, and control lines on board. In our primary Blocks category, Marine-Outlet offers an extensive selection of marine blocks, sheaves, and pulleys for sailboats, dinghies, and yachts. Whether you require ball-bearing blocks for ultra-low friction in light winds, heavy-duty ratchet blocks for mainsheets, or rugged plain-bearing blocks for high static loads: find the perfect hardware for your rig right here.

Ball-bearing, plain-bearing, and ratchet blocks

Our inventory includes premium blocks and rigging hardware from trusted brands such as Optiparts, Windesign, and Viadana:

  • Ball-Bearing Blocks: Provide minimal friction and instant response. Perfect for fine-tuners, vangs, and sheets that require quick trimming and easing.

  • Plain-Bearing Blocks: Extremely durable and engineered for heavy static loads, such as halyard leads at the mast base, standing rigging, or anchoring lines.

  • Ratchet Blocks: Significantly reduce holding power on mainsheets and jib sheets, giving you effortless control during heavy air conditions.

  • Double & Triple Blocks with Becket: Ideal for setting up purchase systems (such as 4:1 or 6:1) for mainsheets and boom vangs.

  • Deck Organizers, Sheaves & Fiddle Blocks: Ensures clean, low-friction line routing from the mast step back to cockpit cleats.

Durability and load capacity

Marine blocks endure extreme tension, saltwater exposure, sand, and sunlight. Our range features marine-grade stainless steel (AISI 316), anodized aluminum, and UV-stabilized composites. Choosing the correct working load and breaking strength guarantees safe operation and extends the lifespan of your running rigging.

Explore our full range of marine blocks online and optimize your boat's line handling with Marine-Outlet.

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