Size 7 Single Plain Bearing Stand-Up BlockBarton plain bearing blocks have a precision molded acetal sheave running on a large diameter brass bearing, ensuring free running under the highest of loads. This range of high-load cruiser bocks is of rugged construction, featuring high-quality injection molded side plates with all load-carrying components from 316-grade stainless steel. Side plates are through-bolted and riveted for added strength and security.Features:This good-looking and versatile range is designed for use on larger cruising and racing yachtsSpecifications & Dimensions:Length: (mm) 162 / (inch) 6-3/8"Weight (grams): 444 g.Single (mm) 70 x 20 / (inch) 2-3/4" x 3/4"Max Rope Diameter: (mm) 14 / (inch) 9/16"SWL: (kg) 1250 / (lbs.) 2750Break Load: (kg) 2500 / (lbs.) 5500Note: break loads where break and safe working loads are stated, it is assumed that all sheaves are evenly loaded as in a purchase tackle Uneven loading, or loading of one sheave in a double or triple block, will severely affect the strength quoted.