Blocks

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

Precision moulded Acetal sheaves running on stainless steel or Torlon ball bearings provide high performance & low friction. Features: Low f...

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

Now you can enjoy the flexibility of setting up your ratchet blocks to suit yourself. Ronstan is the only company that offers a ratchet block with ...

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

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

The incredible Series 20 Orbit Block is capable of loads up to 250kg (550lb) while weighing a mere 9 grams. It's so light that it needs to be lashe...

Precision moulded Acetal sheaves running on stainless steel or Torlon ball bearings provide high performance & low friction. Two-way head - can...

Ball Bearing Orbit Blocks boast the highest strength-to-weight ratio available. This is achieved through all-composite reinforced polymer materials...

Precision moulded Acetal sheaves running on stainless steel or Torlon ball bearings provide high performance & low friction. Features: Low fr...

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...

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

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

Available in two colour options - blue and red with several attachment options, including webbing, pigtail, lashing and dyneema links, it will be t...

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

Swivel cleat bases permit easy cleating and releasing from any angle. Sheave can be relocated to allow the control line to feed from below. Comes c...

The new Series 40 ball bearing Orbit Blocks™ provide the perfect balance of strength, performance, and reliability. They offer class-leading dynami...

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...

Quite simply, Ronstan Ratchet Orbit Blocks ’?½ have the highest holding power available. The sophisticated NC-machined sheave features Generation 2...

Low profile stand-up kit allows 0 ¸ or 90 ¸ alignment Stand-up kits feature a clatter-free rubber boot. You can attach the Dyneema link so that th...

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

Ball Bearing Orbit Blocks boast the highest strength-to-weight ratio available. This is achieved through all-composite reinforced polymer materials...

Use ball bearing Bullet blocks to lead control lines with a minimum of friction. A wide range of variations let these versatile blocks adapt to alm...

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

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

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

The 16mm is Harken's smallest block. It is perfect for small synthetic control lines found on high-tech dinghies. The patented bearing system uses ...

Precision moulded Acetal sheaves running on stainless steel or Torlon ball bearings provide high performance & low friction.Two-way head - can ...

Precision moulded Acetal sheaves running on stainless steel or Torlon ball bearings provide high performance & low friction.Two-way head - can ...

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. Features: Low f...

Precision moulded Acetal sheaves running on stainless steel or Torlon ball bearings provide high performance & low friction. Features: Low fr...

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

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   ...

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 ...

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...

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

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

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

Wire blocks are lightweight, low-friction blocks designed to carry wire halyards and control lines on boats of all sizes. To minimise friction fro...