Manufactured from hardened and tempered Chrome Vanadium steel with a fully polished mirror finish. Double end ratchet spanner combining 1/4" and 5/16"Hex drives. Includes 5/16"Hex x 1/4"Sq Drive adaptor. The heads are fitted with a knurled ring to allow rapid tightening/loosening of fixings. Ultra-smooth 72-tooth ratchet action with flip reverse. Ideal for limited access applications.