These standard length hexagon keys are manufactured from fully hardened chrome vanadium steel, ensuring a quality ductile key. Finished with a black oxide coating with precision square cut ends and accurate imperial dimensions to ensure full socket contact. Available in a range of sizes. Features and Benefits Precision square cut ends make for a positive fit with hexagon head sockets Black oxide finish bolsters the product's resistance to corrosion as well as more general wear and tear Manufactured from chrome vanadium steel for optimum durability Available in a variety of imperial sizes to suit your requirements Typical Applications Bicycle Repair and Maintenance Furniture Assembly Standards DIN ISO 2936