Low-friction Carbo Air blocks are lightweight, strong, reliable, and affordable. Ball bearings, sheave, and side plates are UV stabilized with carbon black for maximum protection Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable 40mm Carbo Double Block With Swivel & Becket - Blocks from Pinnell & Bax Limited UK Patented switch locks shackle in front or side positions, or lets block swivel to keep line from twisting HARKEN Premium Sailing 40mm Carbo Boat Blocks : Sports & OutdoorsEnable 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... Harken 75mm Triple Carbo Block W/Becket - TCS Chandlery Shop HARKEN 40mm Carbo Air® Double Block with Becket, Fixed at West Marine. Visit for prices, reviews, deals and more
