Harken 40 mm Carbo Triple Block with Swivel The Harken 40 mm Carbo Triple Block with Swivel is a premium, low-friction sailing block designed for smooth and efficient line handling on cruising and racing sailboats. Built with Harken's renowned Carbo Air® technology, this lightweight yet durable triple-sheave block delivers outstanding strength, reliability, and high working loads for demanding marine applications.

The integrated 360° swivel head allows the block to align naturally with changing line angles, reducing friction and improving trimming performance. Its compact composite construction and corrosion-resistant stainless-steel components provide long-lasting durability in harsh marine environments.

Ideal for mainsheet systems, control lines, boom vangs, and other running rigging applications, the Harken 40 mm Carbo Triple Block offers dependable performance trusted by sailors worldwide.

Key Features

• Genuine Harken 40 mm Carbo Triple Block

• Swivel head for smooth line alignment

• Low-friction Carbo Air® ball bearing system

• Lightweight, high-strength composite construction

• High working load with compact design

• Corrosion-resistant stainless-steel fittings

• Smooth and efficient sail trimming

• Ideal for cruising and racing sailboats

• Durable, maintenance-free performance

Applications: Mainsheet systems, control lines, boom vangs, running rigging, cruising yachts, racing sailboats, and high-performance sailing applications.

Shiptech Marine Ltd supplies genuine Harken sailing hardware, marine rigging equipment, and premium boating accessories for recreational and commercial vessels.