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Keelboat / Dragon / Blocks / 20mm dynamic blocks
Our go-to low friction, fast rolling, small pulley. It’s lightweight and strong, making it ideal for dinghies, windsurfing, kitesurfing, paragliding and anything else that runs smaller diameter lines.
Available with a wide range of accessories and features to suit most control line applications.
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 | |
|---|---|---|---|---|---|---|---|---|---|---|
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A2020 | 20mm Single Block | 540 | - | 6 | 115 | - | 37 | 10 | £13.20 |
 |
A2020-4035 | Single With P-Clip | 540 | - | 6 | 115 | 5 | 60 | 15 | £15.88 |
 |
A2022 | Double | 600 | - | 6 | 225 | - | 48 | 31.6 | £33.58 |
 |
A2026M | Single Composite Cheek | 540 | 18 | 6 | 115 | - | 33 | 12 | £21.84 |
 |
A2121 | Single Through Deck | 350 | 42 | 6 | 105 | - | 54 | 10.8 | £27.02 |
 |
A2122 | Double Through Deck | 350 | 64 | 6 | 105 | - | 60 | 20 | £40.56 |
 |
A4504 | Double Upstand Block | 350 | 27 x 19 | 6 | 105 | - | 32 | 94 | £58.08 |