The Size 4 Barton range of blocks has a 58mm (2 5/16″) sheave. They are of a rugged construction featuring high-grade molded side plates that are through-bolted and riveted for added strength and security. All load-bearing components and interior frame are from marine grade 316 stainless steel and both plain and ball-bearing sheaves are available. This sleek and versatile range is engineered for use on larger cruising and racing yachts and is compatible with our ball-bearing mainsheet traveler system.
The 54mm sheave Size 4 range is of rugged construction, featuring high-grade molded side plates that are through-bolted and riveted for added strength and security. All load-carrying components and interior frame are from marine grade 316 stainless steel and both plain and ball bearing sheaves are available. This sleek and versatile range is engineered for use on larger cruising and racing yachts and is compatible with our ball bearing mainsheet traveller system.
From premium boat parts to trusted boat repair and convenient mobile boat repair, we proudly serve boaters throughout Clearwater, Tampa Bay, and Central Florida.
![Barton Size 4 58mm Plain Bearing Pulley Upright Block [N04150]](http://www.essentialmarineservices.com/cdn/shop/files/106985XL.jpg?v=1732659673&width=1445)