Ronstan Series 75 Core Block - Mast Base boatcare and rocks - maintain your

and rocks - maintain your boat's value and look effortlessly

Max Mechanical Advance: 62:1

- Tough 5" Wide Strip for maximum protection

- Crafted from durable 316G marine grade stainless steel

cunninghams and tweakers

Ronstan Series 75 Core Block - Mast Base boatcare and rocks - maintain yourCore 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