Allen 40mm Dynamic Single Swivel Block With Becket - A20401B

New for 2023. 40mm dynamic blocks are perfect for use on main, jib and spinnaker sheets on dinghies and keelboat control lines. 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.

Key Features we love

• Bearings – Dynamic blocks feature our 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!
• Becket – This block has a specific becket (tying) moulding. The becket allows you to make a purchase system. Ideal for mainsheet, cunningham, outhaul, and vang controls.

Specifications

• Breaking Load - 780kgs
• Length - 98mm
• Max Rope Diameter - 10mm
• Shackle Pin Diameter - 4mm
• Max Working Load - 240kgs
• Weight - 58grams