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
Multi Person Dinghy / 16ft Skiff / Blocks / 30mm dynamic blocks
Allen 30mm dynamic blocks are super smooth, high performing and ultra-reliable. Available with a wide range of accessories and features to suit most control line applications on dinghies and keelboats.
Dynamic Bearings - Twin rows of stainless steel ball bearings running on a stainless steel axle provide superior rolling speeds and durability when compared to plastic alternatives.
Ultra-Strap – A stainless steel strap which holds the block together and provides a strong, reliable and rope friendly attachment point.
Becket – The hole through the middle of the block can be used as a tying off point (becket).
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 | fixing hole centres mm | maximum line diameter mm | maximum working load kg | shackle pin mm | Length mm | Weight g | Price | |
|---|---|---|---|---|---|---|---|---|---|---|
 |
A2030LZ | Single Stand-Up Fixed | 500 | 34 | 8 | 140 | - | 59 | 30.2 | £26.23 |
 |
A2030SC | 30mm Block w/Swivel | 450 | - | 8 | 140 | 4 | 67.97 | 36 | £43.55 |
 |
A2030Tii- | Single Tii-On | 750 | - | 8 | 140 | - | 42 | 24 | £17.22 |
| A2030XHL | 30mm Extreme High Load Block | 1250 | - | 8 | 500 | - | 43 | 41 | £157.33 | |
| A2131 | Single Through Deck | 500 | 60 | 8 | 140 | - | 47 | 25.6 | £34.92 |