BRASS MATERIAL: Made of high quality brass material, the control valve has high strength and durability. BRITISH SYSTEM: Adopting the most commonly used British system refueling pipe connector 1/4" - 5/16". THICKENED BODY: Adopting thickened body, the brass pipe connector is and has long service time. APPLICATION: Water control valve pipe connector is designed for refrigerant charging hose R410A, having this tool,no more refrigerant burns on hands. EASY TO INSTALL: Install on the end of a charging hose and minimize refrigerant loss during servicing., Weight: 0.220462262 pounds, Manufacturer: Hilitand