Blocks

Low-friction Micro blocks are compact and lightweight. They are ideal for sailboards, smaller dinghies, and lightly loaded control lines on boats o...

Low-friction Micro blocks are compact and lightweight. They are ideal for sailboards, smaller dinghies, and lightly loaded control lines on boats o...

Low-friction Micro blocks are compact and lightweight. They are ideal for sailboards, smaller dinghies, and lightly loaded control lines on boats o...

Over-the-top blocks lead lines aft over cabin houses, coamings, and splashguards. Sheave Ø (mm) 57 mm Sheave Ø (in) 2 1/4 in Length (mm) 83 mm ...

Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to our popular Harken Big Boat blocks, these small, comp...

The 1598 U-adaptor allows blocks with up to 15 mm (19/32") posts to be attached to swivel bases or to other blocks with 15 mm (19/32") posts. Fits ...

The 463 U-Adaptor adapts 75 mm Carbo single blocks to swivel bases. Height (mm) 46 mm Weight (g) 136 g Minimum line Ø (mm) 3 mm Maximum line Ø ...

Low-friction Bullet blocks lead control lines aft. They are compact and lightweight, with fast trim and release under high or low loads. A range of...

The V block delivers another breakthrough in Harken’s loop block series for Grand-Prix racers. Harken engineers have simplified the mechanics by co...

The V block delivers another breakthrough in Harken’s loop block series for Grand-Prix racers. Harken engineers have simplified the mechanics by co...

The V block delivers another breakthrough in Harken’s loop block series for Grand-Prix racers. Harken engineers have simplified the mechanics by co...

Big Boat sheaves are available for special applications as well as for replacement sheaves in Big Boat blocks. Made of hardcoat-anodized, PTFE-impr...

Big Boat sheaves are available for special applications as well as for replacement sheaves in Big Boat blocks. Made of hardcoat-anodized, PTFE-impr...

PNP Kite/Utility blocks BENEFITS •Lightweight durable construction •Economical •Maintenance free•Simple lash-on attachment APPLICATIONS •Vang, cunn...

Ronstan Kite/Utility blocks. Available in black, red or grey and in single or two packs. BENEFITS •Lightweight durable construction •Economical •Ma...

Aluminum pulley with single wheel, mobile side plates and high efficiency (96%) ball bearing .Equipped with two attachment points for use in comple...

Compact and lightweight pulley with fixed side plates, aluminum body and ball bearing to ensure optimum efficiency.Nylon wheel.For ropes up to 11 m...

Riley Hooked Block. Stainless steel body with nylon sheave. Hooks directly into mast on many dinghies. 19mm x 6mm Single Sheave Block Max Rope Dia...

Riley Mini Blocks. Strong yet lightweight nylon body with chrome plated bronze sheave. DIMENSIONS: Sheave Diameter: 14mm Overall Length: 34mm Ov...

Riley Outlet (Exit) Blocks. Stainless steel body with nylon sheave. For leading lines into or out of masts and spars. DIMENSIONS: Overall Length:...

Ronstan Upright Lead blocks are a low profile solution for leading halyards or other rig sail controls back to cleats or jammers. Applications •...

Ronstan 19mm loop top becket block for saddle mounting. Stainless steel cheeks and Acetal sheaves ensure a long service life with virtually no main...

Ronstan 19mm ferrule head utility block. Stainless steel cheeks and Acetal sheaves ensure a long service life with virtually no maintenance. Hollow...

Ronstan 19mm loop top block for saddle mounting. Stainless steel cheeks and Acetal sheaves ensure a long service life with virtually no maintenance...

Ronstan 19mm tube rivet utility block. Stainless steel cheeks and Acetal sheaves ensure a long service life with virtually no maintenance. Hollow r...

Ronstan 19mm tube rivet utility block. Stainless steel cheeks and Acetal sheaves ensure a long service life with virtually no maintenance. Hollow r...

Ronstan Lead blocks are a low profile solution for leading halyards or other rig sail controls back to cleats or jammers.When mounted in an inverte...

Ronstan Lead blocks are a low profile solution for leading halyards or other rig sail controls back to cleats or jammers.When mounted in an inverte...

Ronstan 19mm wire blocks have specialised Nylatron sheaves for maximum wear resistance and narrow grooves to support wire. Applications •Wire bloc...

Ronstan traveller control block addition kit to suit Series 22 ball bearing traveller systems. •Grade 316 stainless steel cheeks & fasteners •...

Ronstan Utility Blocks feature Stainless steel cheeks and Acetal sheaves to ensure a long service life with virtually no maintenance. Hollow rivets...

Ronstan Utility Blocks feature Stainless steel cheeks and Acetal sheaves to ensure a long service life with virtually no maintenance. Hollow rivets...

Ronstan Utility Blocks feature Stainless steel cheeks and Acetal sheaves to ensure a long service life with virtually no maintenance. Hollow rivets...

Ronstan 25mm Utility Blocks. Stainless steel cheeks and Acetal sheaves ensure a long service life with virtually no maintenance. Hollow rivets in t...

Ronstan single Utility Block with V-Jam cleat. Stainless steel cheeks and Acetal sheaves ensure a long service life with virtually no maintenance. ...

Ronstan triple Utility Block with V-Jam cleat. Stainless steel cheeks and Acetal sheaves ensure a long service life with virtually no maintenance. ...