Ronstan Series 45 Core Block - Single, Swivel Shackle Head propeller repair Spline Driven with 12 rubber

Spline Driven with  12 rubber splines

Zero Off provides true closed loop control of boat speed which means that

Suit 2 1/2" hose and are fixed to the transom through 3 mount holes

Precision moulded Acetal sheaves running on stainless steel or Torlon® ball bearings provide high performance & low friction

Small Cabin Rail - 256mm

Ronstan Series 45 Core Block - Single, Swivel Shackle Head propeller repair Spline Driven with 12 rubberCore 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