Christmas Opening Hours
Please be advised that Allen Brothers will close at 15:00 on 20th December and reopen on 6th January.
Orders placed during this period will be processed upon our return.
Wishing you a Merry Christmas and a Happy New Year!
Shop by boat
Single Person Dinghy / Optimist / Blocks / Wire Blocks
Specifically intended for use where wire lines are subjected to low rotational high loads.
The range uses stainless-steel side cheeks and a single row of spaced stainless-steel ball bearings in the sheave to give maximum strength in the smallest form possible.
Available with different accessories including hooks, beckets, swivels and shackles giving a whole range of choices to suit different applications.
Bearings – A single row of spaced stainless steel ball bearing run on a stainless steel axle. This allows the width of the block to be as narrow as possible whilst still offering excellent rolling speeds and high working loads.
Body – Formed in stainless steel for a lightweight yet robust frame.
Maximum Working Load – If exceeded the block may not perform as designed.
Breaking Load – The load at which a major block failure is likely to occur.
| SKU | Title | breaking load kg | maximum line diameter mm | shackle pin mm | sheave diameter mm | Length mm | Weight g | Price | |
|---|---|---|---|---|---|---|---|---|---|
 |
A4068 | Optimist Sprit Block | 400 | 2 - 4 | 4 | 16 | 55 | 20 | £33.11 |