Harken 1544 76mm Midrange Double Block Sailing Block

The Harken 1544 is a 76mm (3") Classic Midrange Double Block built for the demanding loads found aboard medium and large offshore sailboats. Featuring two ball-bearing sheaves and a three-way swivel head, this block delivers smooth, fast line handling for mainsheets, halyards, spinnaker sheets, and control lines.

Key Features:

• Dual 76mm (3") sheaves run exclusively on a ball bearing system for fast trim and release under any load
• Free-rolling carbon-black Delrin® ball bearings, sheave, and side plates are UV-stabilized for maximum protection in harsh marine environments
• Stainless steel side strap wraps across the block head for increased strength and safety
• Three-way swivel head can be fixed side-to-side, fore-and-aft, or allowed to swivel freely to prevent line twist
• Accepts line up to 9/16" (14mm) in diameter
• 5/16" (8mm) shackle pin diameter
• Robust Midrange construction rated for a maximum working load of 2,800 lbs (1,270 kg) and a breaking load of 7,000 lbs (3,175 kg)

Specifications:

• Sheave Diameter: 3" (76mm)
• Maximum Line Diameter: 9/16" (14mm)
• Shackle Pin Diameter: 5/16" (8mm)
• Maximum Working Load: 2,800 lbs (1,270 kg)
• Breaking Load: 7,000 lbs (3,175 kg)
• Length: 7-1/2" (191mm)
• Weight: 25.5 oz (723g)

Ideal for use as mastbase halyard lead blocks, mainsheets, spinnaker sheets, and running control lines on offshore yachts up to 39 feet. The Harken 1544 is a trusted choice for sailors who demand reliable performance under heavy load.