... 1.Material: carbon steel ,Stainless steel ,CRV2.Surface finishing: chrome plating, black finished, Nickel plated ,satin finished3.Size: 6", ... ). Convenient to be used for tightening and loosening bolts, nuts and other.Specifications: Product NameOpen End WrenchTypeDouble ... Open End WrenchDescription:Made from hardened and tempered drop forged chrome vanadium steel.Ideal for connecting regulators ...