Uniweld 70075 Reversible Offset Ratchet Wrench with DHW316 Dual Hex Adaptor is a double ended reversible ratchet wrench with offset design for knuckle clearance in tight work areas. It is made with chrome plated, heat treated alloy steel construction with strong gear teeth and reversing mechanism. Has hex openings ¼” and 3/16” at one end; 1/2” and 9/16” at the other. Comes with Uniweld’s DHW316 Dual Hex Wrench Adaptor which is also made with heat treated alloy steel and plated to prevent rust. It is for use on 3/16” and 5/16” hex liquid and suction valves on residential and commercial equipment.