Material Alloy Steel Head Style Fixed Square Mode Of Operation Mechanical About This Item Top Quality - This universal sleeve is made of chromoly steel and has 54 chromoly steel pins, characterized by the highest strength and providing you with a reliable and durable tool for efficient and practical applications. Universal handle 7mm socket at 19mm. Fits standard 1/4 to 3/4 in. and metric 7 to 19 mm nuts and bolt heads It can be used in automotive, household, manufacturing, construction and others. Loosen all screws, nuts, hooks and other fasteners. Perfect addition to your toolbox Compact and easy to carry, can be used in the automotive industry, household care, manufacturing industry, construction Can be disassembled in various forms of nuts, hooks, wood screws and screw heads ect, removable screws, swivel hooks, disassemble pan head screw, remove uneven screws and broken taps, knobs