Ronstan Series 60 Core Block - Halyard, Screw Pin with Roller Head adapter 4165002 - 1/2" UNC Dim

4165002 - 1/2" UNC Dim (a) (mm):12

For use when flushing out your engine

UV stabilised Acetal sheave

Crafted from UV-resistant white PVC with reinforced star pattern heads in a classic European style

Soft Clutches

Ronstan Series 60 Core Block - Halyard, Screw Pin with Roller Head adapter 4165002 - 1/2" UNC DimCore 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