We're here to help! Call us on 01634 566 412

Harken 40mm Carbo Double Swivel Block


+ -
Fast Delivery

Fast & Fully Trackable As Standard

Easy Returns

14 Day Money Back Returns

Customer Service Guaranteed

Trusted By Thousands For Over 25 Years

Low Prices

Fantastic Prices Guaranteed


Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming.

Sheave Ø (mm) 40
Length (mm) 94
Weight (g) 86
Shackle pin Ø (mm) 5
Maximum line Ø (mm) 10
Maximum working load (kg) 440
Breaking load (kg) 1080