Allen 40mm Triple Block with Swivel Head

40mm Triple Block with Swivel Head

Made from high-strength, lightweight glass-loaded nylon and featuring Allen’s dynamic bearing technology for a high-performance block suitable for keelboats and dinghies.

40mm dynamic blocks are perfect for use on main, jib and spinnaker sheets on dinghies and keelboat control lines.

Bearings – Dynamic blocks feature Allen patented bearing system which uses twin rows of stainless-steel ball bearings running on a stainless-steel rail. The ball bearings are caged for further friction reduction. These features provide a superior load-carrying ability and longevity when compared to other bearing systems.

Swivel Head – Featuring a 360-degree swivel head with a 4mm shackle.

The shackle is load rated higher than the block, so although it might look small, it’s plenty strong enough!

spec sheet Blocks Ball Bearing Allen

	Part	Description	Length mm	Line Ø mm	Shackle Pin mm	Break Load Kg	Max Work Load Kg	Weight gm	RRP Inc VAT	Unit
	AL-20403	Triple with swivel head	92	10	5	1400	750	161	£138.21	each

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40mm Triple Block with Swivel Head

Allen 40mm Triple Block with Swivel Head

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