Ronstan Series 15 Ball Bearing Utility Block - Double, Loop Head [RF15202] Brand_Ronstan Cut-Out: 3-3/4"

Cut-Out: 3-3/4"

Designed specifically for sanitation waste and fish box evacuations

Impact and UV resistant

It's designed to open temporarily and discharge short spurts of water when the temperature exceeds about 210 degrees F

Ronstan Series 15 Ball Bearing Utility Block - Double, Loop Head [RF15202] Brand_Ronstan Cut-Out: 3-3/4"Series 15 Ball Bearing Utility Block Double, Loop Head Features: Smallest and lightest ball bearing block available Precision molded acetal sheave running on stainless steel ball bearings provide high performance & low friction Single loop head blocks include an O ring to separate running line from head lashing or fixing Applications: Dinghy control lines Vangs, cunninghams and tweakers Shock cord tensioning systems Materials: BB sheaves: UV