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Keelboat / Cape 31 / 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 kgfixing hole centres mmmaximum line diameter mmmaximum working load kgshackle pin mm Length mm Weight g Price
A2020 20mm Single Block 540-6115- 37 10 £13.20
A2020Tii- Single Tii-On 540-6115- 29 8 £13.20