20mm dynamic blocks

Allen 20mm dynamic blocks are available with a wide range of accessories and features to suit most control line applications on dinghies, as well as lightweight take up systems on 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. 

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