Ronstan Series 60 Core Block - Double, Non-Swivel Head Oil Extractor Pumps Base is 108mm (4 1/4")

Base is 108mm (4 1/4") x 38mm (1 1/2")

Each adapter includes a billet center cap which fits 3" cap hole

1 x o ring

sports events

reducing boat weight

Ronstan Series 60 Core Block - Double, Non-Swivel Head Oil Extractor Pumps Base is 108mm (4 1/4")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