Ronstan Series 60 Core Block - Mast Base, Clevis Pin Head MUDX supplied with 1/4" key

supplied with 1/4" key

Available in body lengths

Smallest and lightest ball bearing block available

Marine quality trumpet horns with 100% stainless steel exterior

Ronstan Series 60 Core Block - Mast Base, Clevis Pin Head MUDX supplied with 1/4" keyCore 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