Yacht Sailboat 75mm 2 15/16 inch Single Swivel Shackle Becket Block BB-0702F Master Windrider blocks are engineered for competitive sailing. The high strength composite sideplates are to provide top performance of working loads. The excellent weather-ability protects blocks from breaking down for any sailing conditions. Available in comprehensive range of sizes for different rope diameters and configurations. Master blocks are beautiful in design, but simple in use. Ultra Lightweight Master set a new standard of lightweight to blocks. With extremely lightweight, Master block are the best choice for racers. Stronger Strength Engineering composite is stronger and lighter than classic stainless steel blocks. Low Friction Ball Bearing The exclusive engineering plastic composites ball bearing provides sheave with good rotation and less friction. With the safe working load of 560 kgs, the 75mm block is perfectly designed for mainsheet system. An exclusive Face to Face locker system can be easily engaged to position shacke in either of two directions or just free to swivel. A locker system also can take more loads then traditional ways without damaging the block and hassle. Patent pending in Australia, US, UK, France, Netherlands, China, Germany, and Taiwan. US, Taiwan, and China Design Patent. Specification: Brand: Master Part Number: BB-0702F Sheave Ø (mm) 75 mm Sheave Ø (in) 2 15/16 in Length (mm) 168 mm Length (in) 6 3/5 in Weight (g) 212 g Weight (oz) 7.47 oz Maximum line Ø (mm) 14 mm Maximum line Ø (in) 9/16 in Safety working load (kg) 560 kg Safety working load (lb) 1232 lb Breaking load (kg) 1700 kg Breaking load (lb) 3740 lb •Do not use Master products to human suspension! Destination custom duty/tax are not included in the listing price; it is the customer's responsibility to pay for custom duty if any.