- Part of the Siegen by Sealey range of quality tools at competitive prices. - Manufactured from heat treated and hardened Chrome Vanadium steel with a blackened finish. - Keys range in length from 90mm to 230mm and in size from 1/16" to 3/8". - Ball-end allows key to drive fixing at up to 30?. - Contents: 1/16", 5/64", 3/32", 1/8", 5/32", 3/16", 1/4", 5/16", 3/8". - Supplied in easy-access case with hanging tag for safe storage and quick key selection. - Lifetime guarantee*.