Barton Marine N04 150 Size 4 Single Upright Block 58mm Sheave

The Barton Marine N04 150 is a Size 4 single upright block featuring a 58mm (2 5/16") plain bearing sheave designed for larger cruising and racing yachts. This robust pulley block combines high-grade molded side plates with marine-grade 316 stainless steel load-bearing components for exceptional strength and durability in demanding marine environments.

Key Features:

• 58mm (2 5/16") plain bearing sheave for smooth line management
• High-grade molded side plates that are through-bolted and riveted for maximum strength
• Marine-grade 316 stainless steel load-bearing components and interior frame
• Suitable for rope up to 12mm (7/16") diameter
• Compatible with Barton ball-bearing mainsheet traveler systems
• Upright mounting configuration for versatile deck and mast applications

Engineered for the rigors of yacht racing and extended cruising, this Size 4 upright block delivers reliable performance in saltwater environments. The combination of corrosion-resistant stainless steel internals and reinforced composite construction ensures long-lasting service life with minimal maintenance requirements.