Ronstan Series 75 Core Block - Single, Becket, Universal Head sealant * Can only shift at

* Can only shift at low rpm's

Self primes to 3

1 x 280mm length

Requires just 10 -20 strokes to create a powerfull vacuum

Includes Cassell Stainless Steel Exhaust Flanges I

Ronstan Series 75 Core Block - Single, Becket, Universal Head sealant * Can only shift atCore 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