Ronstan Series 60 Core Block - Single, Rope/Wire Sheave anchor 1-1/2" female BSP ports

1-1/2" female BSP ports

Cheek cut-outs for easy bearing maintenance

Replacement for Mercruiser part # 99438A1

which is 10 times stronger and lighter than steel

RWB7708  - Silver / black

Ronstan Series 60 Core Block - Single, Rope/Wire Sheave anchor 1-1/2" female BSP portsCore 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