Ronstan Series 75 Single Block Johnson Marine of high performance/flame resistant material

of high performance/flame resistant material

Fits: Large - fits Harken 40 Quattro

All abrasive products that rotate or spin

Suits 3-12mm (1/8-1/2") dia

Ronstan Series 75 Single Block Johnson Marine of high performance/flame resistant materialCore 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