... contract .1.Material: carbon steel ,Stainless steel ,CRV2.Surface finishing: chrome plating, black finished, Nickel plated ,satin finished3.Size: 6", 8 ... Open End WrenchDescription:Made from hardened and tempered drop forged chrome vanadium steel.Ideal for connecting regulators to gas bottles ( ... trade company.We have more than 10 years experience do hand tools.We are the king of this aera, we have ...