Allen 40mm Single Block with Swivel Head & Fiddle

40mm Single Block with Swivel Head & Fiddle

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's 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!

Fiddle – The fiddle sheave is a 20mm dynamic bearing sheave. This ensures that any purchase systems run as smoothly as possible.

spec sheet Blocks Ball Bearing Allen

	Part	Description	Length mm	Line Ø mm	Shackle Pin mm	Break Load Kg.	Max Work Load	Weight gm	RRP Inc VAT	Unit
	AL-20401-F	Single with swivel head & fiddle	107	10	4	780	240	68	£61.15	each

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40mm Single Block with Swivel Head & Fiddle

Allen 40mm Single Block with Swivel Head & Fiddle

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