HARKEN Premium Sailing 40mm Carbo Fixed Boat Block Double Pulley, Part 2642

.T2 blocks come in single and double configurations and can be tied, spliced, or lashed to almost anything. T2 doubles feature composite line guides that are integrated into the block head. They prevent the block from capsizing by pushing the lashing line to the outer edges of the side plates. The 29, 40, and 57 mm blocks feature composite sheaves that spin freely on Delran ball bearings with curved bearing races. They have no metal shackles or rivets, making them the lightest soft-attach blocks Harken has ever designed. All T2 blocks route the attachment line through the block head and sheave, decreasing the loads on the side plates and acting as a safety backup for the system. Use for traveler controls, mainsheets and vans, cascades, bridles, and other systems where small lightweight blocks are called for. A length of Spectra line is included. Maximum line O: 10 mm. Maximum line O: 3/8 in. Maximum working load: 317 kg. Maximum working load: 700 lb. Breaking load: 952 kg. Breaking load: 2100 lb. Sheave O: 40 mm. Sheave O: 1-9/16 in. Length: 57 mm. Length: 2-1/4 in. Weight: 48 g. Weight: 1.7 oz.
.Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable
.Enable safe and easy sail trimming and are 30% lighter, with a 60% higher working load, than Classic blocks
.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