Harken Carbo Air Block - 40 mm (1 9/16") - 2639

The Harken 40 mm Carbo Air Block - Double with Swivel and Becket (2639) is a lightweight, strong and affordable block. They enable safe and easy sail trimming and are 30% lighter, with a 60% higher working load, than Classic blocks.

Features:

• Open Air Block design eliminates unnecessary material and weight
• Ball bearings, sheave, and side plates are UV stabilized with carbon black for maximum protection
• Patented switch locks shackle in front or side positions, or lets block swivel to keep line from twisting
• Designed for use with:
  • Main/jib sheets
  • Mainsheet fine-tune
  • Control lines
  • Vangs
  • Cunninghams
  • Outhauls

Specifications:

• Maximum Working Load: 970 lbs (440 kg)
• Breaking load: 2380 lbs (1080 kg)
• Weight: 3.4 oz (90 g)
• Sheave diameter: 1 9/16" (40 mm)
• Maximum line size: 3/8" (10 mm)

Note: do not use Harken Equipment for human suspension.