Ronstan Series 15 Ball Bearing Utility Block - Pivoting Lead Block – Marine Boat Replacement Part is organized for gaskets, seals & o-rings shoppers who need a clear, professional marine parts buying experience.

Series 15 Ball Bearing Utility Block - Pivoting Lead Block 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 Featuring a 4-point fastening for load distribution and low profile. Can be mounted without disassembly. Applications: Dinghy control lines Vangs, cunninghams and tweakers Shock cord tensioning systems Materials: BB sheaves: UV stabilized acetal Ball bearings: Stainless steel Cheeks: Grade 316 stainless steel

Fitment & Product Details

• Brand / Manufacturer: Ronstan, Sem
• Material: stainless steel

• Search-optimized by brand, system, part type, and fitment cues.
• Verify compatibility with your original part number, engine model, and application before ordering.
• Built for boat owners, e-commerce shoppers, and professional marine service teams.