Ronstan Series 50 All Purpose Block, Single Universal Head, 50mm Sheave

Elevate your sailing performance and reliability with the Ronstan Series 50 All Purpose Block. Engineered for the demanding conditions of both cruising and racing, this single universal head block delivers exceptional high working loads and smooth, low-friction operation. It's the ideal choice for managing sheets, halyards, and control lines on boats up to 10 meters (33 feet). Upgrade your rigging for superior control and durability today.

• High Working Loads: Boasts an exceptionally high maximum working load (MWL) of 750kg (1,650lbs) and a breaking load (BL) of 1,500kg (3,310lbs), ensuring dependable performance under intense pressure.
• Self-Lubricating Sheave: Features a 50mm (2") diameter self-lubricating Acetal polymer (Nylatron®) sheave running on polished Grade 316 stainless steel races, providing low friction and a long service life with minimal maintenance.
• Versatile Universal Head: The Captive Lock™ universal head allows for flexible mounting, enabling it to be fixed in two planes or free to swivel as required, adapting to various rigging setups.
• Robust Construction: Built with a Grade 316 stainless steel load strap and head fitting, complemented by impact and UV-resistant, fiber-reinforced Nylon cheeks for enhanced durability and weather resistance.
• Optimized for Marine Use: Designed for sheets, halyard applications, vang, and spinnaker control lines on a wide range of vessels.
• Slotted Pin Shackle: Helps to eliminate fouled lines, ensuring smooth and uninterrupted operation.

• Sheave Diameter: 50mm (2")
• Maximum Rope Diameter: 12mm (1/2")
• Maximum Pin Diameter: 5mm (3/16")
• Weight: 118g (4.1 oz)