Ronstan Series 75 Core Block - Halyard, Screw Pin with Roller head trailer parts Stops porpoising

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The sophisticated NC-machined sheave features Generation 2 of our patented sheave cross-hole geometry

Ronstan Series 75 Core Block - Halyard, Screw Pin with Roller head trailer parts Stops porpoisingCore 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