Professional quality, forged from chrome vanadium steel hardened, tempered & chrome plated for corrosion protection. Polished bi-hexagon ring & jaw offset at 15°. Carton packed. Contents: 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16 & 7/8 imperial. Manufactured to din 3113 form b/iso 3318 specifications. Weight: 1.27kg.