1、These universal shut off valves are suitable for coolant R410A R134A charging hose, necessary tools for air conditioning maintenance and coolant adding. 2、The shut off valve is equipped with standard 1/4 inch SAE thread, providing stable and seamless connection, ensures quick finger tightening, you can use it with confidence. 3、These 1/4 coolant shut valves are made of excellent copper material, provides high strength, oxidation resistance and strong sealing for durability and security. 4、The compact shut off valve can be operated with one hand. Screws onto charging hose end, convenient to operate and install, which is secure and reliable. 5、This kit provides 3 pieces AC charging hose shut off valves with yellow, blue, and red sleeves, which can directly replace old or damaged coolant charging hose valves. Item Type: Shut Off Valve Color: Gold, Blue, Yellow, Red Material: Copper Screw Thread: 1/4 inch SAE Quantity: 3PCS Product Size: Approx. 90 x 40 x 16mm / 3.5 x 1.6 x 0.6in Product Weight: Approx. 223g / 7.9oz 1 x Blue Shut Valve 1 x Yellow Shut Valve 1 x Red Shut Valve