Ronstan Series 75 Core Block - Single Foot waterpumps to lock the bow ‘U’

to lock the bow ‘U’ bolt under roller

Air Tight Seal

Adjustable multi position locking mechanism

Manifold Studs

Universal Gear Lube Pump for use with standard or wide mouth bottles

Ronstan Series 75 Core Block - Single Foot waterpumps to lock the bow ‘U’Core 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