General description This Draper Expert 12-Piece Imperial Hexagon and Ball End Hex Key Set includes high-quality imperial hexagon keys featuring both ball ends on the long arm and conventional ends on the short arm. The ball end allows for use at angles up to 30° from the screw head recess, providing greater flexibility during use. Made from hardened and tempered chrome vanadium steel, these keys are durable and resistant to wear. They come in a fold-out, easy-release holder that can be wall-mounted for convenient storage and organization. Technical specifications Material: Chrome vanadium steel, hardened and tempered Finish: Chemically blacked Set includes: 1/16", 5/64", 7/64", 9/64", 5/32", 1/8", 3/16", 7/32", 1/4", 5/16", 3/8" Number of pieces: 12 Compatibility and accessories Compatible with standard imperial hex screws and bolts Supplied with a wall-mountable holder for easy storage Installation Insert the hex keys into the fold-out holder Mount the holder on a wall using