Ronstan Series 60 Core Block - Single, Becket, Cleat, Universal Head ronstan rope 40mm sheave alloy torlon ball bearing Size is determined by the

Size is determined by the approx size top to bottom when spread onto the hull flange

Perfect for bilge pumping

Filter element - HD polyethylene

Self priming up to 3

Rope jammer

Ronstan Series 60 Core Block - Single, Becket, Cleat, Universal Head ronstan rope 40mm sheave alloy torlon ball bearing Size is determined by theCore Blocks are a true all round solution. A tuned 2 stage bearing system provides excellent performance across the full working load range with an integrated thrust bearing feature and the resilience to handle high dynamic or static loads. Acetal sheave, alloy cheeks and stainless fixings complete the durable package. For reliability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for