Quadruple 40mm Dynamic block Type_Compass Sheave size: 34 mm (1-5/16")

Sheave size: 34 mm (1-5/16")

the ratchet now grips the rope at additional points around the sheave

The ultimate multi-purpose base layer

the Prism provides superior accuracy

Strong and light

Quadruple 40mm Dynamic block Type_Compass Sheave size: 34 mm (1-5/16")Allen 40mm Dynamic Blocks feature the patented Allen Dynamic bearing system which provides an unrivalled weight to performance ratio. This is coupled with their high strength and rope friendly stainless steel ultra strap; making them amongst the strongest and most reliable ballbearing blocks on the market. The range is available with different types of accessories including lacing eyes, hooks, swivels and cleats. The range also features a central