Blocks

Lead blocks are a low profile solution for leading halyards or other rig sail controls back to cleats or jammers.   Applications:Typically used in ...

Awesome ratchet block holding power Quite simply, Ronstan Ratchet Orbit Blocks ’?½ have the highest holding power available. The sophisticated NC-m...

Features: Lightweight durable construction Economical Maintenance free Hollow rivets accept fixing screws, shackles or can be used as a be...

All purpose (AP) blocks are a great all around solution. Self-lubricating Acetal polymer sheaves running on polished stainless steel races perform...

All purpose (AP) blocks are a great all around solution. Self-lubricating Acetal polymer sheaves running on polished stainless steel races perform...

Stainless steel cheeks and Acetal sheaves ensure a long service life with virtually no maintenance. Hollow rivets in the block heads can be fitted ...

Stainless steel cheeks and Acetal sheaves ensure a long service life with virtually no maintenance. Hollow rivets in the block heads can be fitted...

Precision moulded Acetal sheaves running on stainless steel or Torlon ball bearings provide high performance & low friction. Sheave  20 mm...

Lead blocks are a low profile solution for leading halyards or other rig sail controls back to cleats or jammers. Precision moulded Acetal sheaves ...

Precision moulded Acetal sheaves running on stainless steel or Torlon ball bearings provide high performance & low friction. Can be fitted with...

These sheaves are made from a unique plastic material which is suitable for use with wire.  Nylatron

  A - mm   B 40.0 mm   C 28.0 mm   D 2.0 mm   ...

Standup springs to suit Series 20 single blocks.   A - mm B 16.5 mm C 22.0 mm D 1.2 mm Weight 3 g     Materials: Grade 316 stainl...

These sheaves are made from a unique plastic material which is suitable for use with wire.  Nylatron® is a cast, partially cross-linked polyamide ...

Ronstans range of Acetal sheaves is moulded from specially modified ultra-violet resistant grade of material to provide a long service life in the...

Ronstans range of Acetal sheaves is moulded from specially modified ultra-violet resistant grade of material to provide a long service life in the ...

Ronstans range of Acetal sheaves is moulded from specially modified ultra-violet resistant grade of material to provide a long service life in the...

Ronstans range of Acetal sheaves is moulded from specially modified ultra-violet resistant grade of material to provide a long service life in the...

Ronstans range of Acetal sheaves is moulded from specially modified ultra-violet resistant grade of material to provide a long service life in the...

These sheaves feature self lubricating Oilite Bronze bearings for greater load capacity and long life. Oilite bearings are produced from oil-impre...

Ronstans range of Acetal sheaves is moulded from specially modified ultra-violet resistant grade of material to provide a long service life in the...

16mm AirBlocks offer very high working loads in an extremely small, lightweight block.These diminutive blocks feature a patented bearing system usi...

Can be used in conjunction with saddle RF94A for stand up block configuration.    A - mm   B 20.0 mm   C 32.0 mm   D 2.0 mm   Weight 3 g ...

Ronstans range of Acetal sheaves is moulded from specially modified ultra-violet resistant grade of material to provide a long service life in the...

Springs are used to support blocks on padeyes, eye-straps, bases and traveller cars. Keeps blocks from hitting the deck. Features: A: 51mm B: 22mm ...

Ronstans range of Acetal sheaves is moulded from specially modified ultra-violet resistant grade of material to provide a long service life in the...

Ronstans range of Acetal sheaves is moulded from specially modified ultra-violet resistant grade of material to provide a long service life in the...

Ronstans range of Acetal sheaves is moulded from specially modified ultra-violet resistant grade of material to provide a long service life in the...

Self-contained sheaves are designed for sailors to use in custom applications.The Micro, Bullet and Big Bullet sheaves are Delrin with Delrin ball ...

Springs are used to support blocks on padeyes, eye-straps, bases and traveller cars. Keeps blocks from hitting the deck. Features: A: 64mm B: 35mm ...

Springs are used to support blocks on padeyes, eye-straps, bases and traveller cars. Keeps blocks from hitting the deck. Features: A: 25mm B: 19mm ...

Lead blocks are a low profile solution for leading halyards or other rig sail controls back to cleats or jammers. Applications: Typically used i...

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

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

Ronstan manufactures an extensive range of sheave boxes for use with rope and wire. Plain bearing sheaves are ideal for halyards and other applica...

Ronstan manufactures an extensive range of sheave boxes for use with rope and wire. Plain bearing sheaves are ideal for halyards and other applica...

Ronstan manufactures an extensive range of sheave boxes for use with rope and wire. Plain bearing sheaves are ideal for halyards and other applica...

Precision moulded Acetal sheaves running on Acetal ball bearings provide high performance & low friction. The 2-stage ball bearing system prov...

Sheaves have a deep groove to cradle 5mm (3/16") diam. wire. Applications: Ideal for small runabouts where hydraulic steering is not needed. ...

Ronstan's smallest and lightest ball bearing blocks. Features: Smallest and lightest ball bearing block available Precision moulded acetal sheave ...

16mm AirBlocks offer very high working loads in an extremely small, lightweight block.These diminutive blocks feature a patented bearing system usi...

16mm AirBlocks offer very high working loads in an extremely small, lightweight block.These diminutive blocks feature a patented bearing system usi...

Micro blocks are small, lightweight, free-running blocks. They are ideal for use on sailboards, smaller dinghies, and for lightly loaded control li...

Yacht sheave boxes are ideal for halyard exit and entry boxes with special side flanges to minimise friction. HA8A have a nylon casing and alloy s...

Lightweight. Plain bearing block 16mm micro block Features: Length: 16mm Rope - Max 5mm, Sheave - 16mm diatemter. Breaking Load - 275kg Safe worki...

The Selden dinghy range of sheave boxes covers all requirements, from standard jib, spinnaker and topping lift sheave boxes, to lower halyard exit ...

The patent-pending T2 Ratchamatic is Harken ’??s newest block to feature the T2 line ’??s styling and soft-attachment system. Very light weight th...

Quite simply, Ronstan Ratchet Orbit Blocks ’?½ have the highest holding power available. The sophisticated NC-machined sheave features Generation ...