Description

The Series 20 Ball Bearing Triple Block with Becket, Cleat and Shackle has a 2-way head that can be fixed at 0 or 90 degrees. It provides powerful, efficient adjustment and secure holding for important lines under load.

Typical applications

• Mainsheet Systems: the triple block's three sheaves enable multi-part tackle (such as a 6:1 or 7:1 purchase) for the mainsheet, enabling easier and finer trimming of the mainsail, especially under heavy load.
• Boom Vangs: provides similar purchase to control boom height and leech tension, crucial for sail shape and performance.
• Backstay Adjusters: backstay systems may use such blocks to quickly adjust mast bend or forestay tension.

Component functions

• Triple Sheaves: multiply pulling force and reducing the manual effort needed for control.
• Becket: serves as an anchor point for the end of the control line, providing a starting/ending reference for the tackle setup.
• Cleat: Integrated cam cleat allows locking off the line at any point, holding the adjustment hands-free.
• Shackle: Provides a secure, detachable connection to a fixed point like a boom bale, traveler, deck padeye, or other fitting.

Specifications

• Maximum rope diameter: 1/4 in. (6mm)
• Maximum working load: 880 lbs.
• Sheave diameter: 3/4 in.
• Breaking load: 1870 lbs.
• Weight: 4.3 oz.
• Pin diameter: 5/32 in. (4mm)

Specifications

• Weight: 200gr
• Usage: Indoor & outdoor

Pros and cons

• Sustainably produced
• Ideal for everyday use
• May discolor in direct sunlight