Made of brass, aluminum and steel materials, , temperature resistance and resistance, providing solid internal structure, heat resistance, durability and rust resistance, ensuring long -term service life. The connection parts adopt a precision fine thread design, and the interface is also equipped with sealing parts to safety. The design of R1234YF to R134A conversion adapter can provide good sealing. At the same time, it has closed functions. It is convenient to use and effectively prevent leakage. These low/high-side modification/adapter/accessories be converted to the old 1/4 inch SAE or 7/16 inch -20 UNF R12 R22 charging port to accept itR134A fast disconnecting hose; low side, 1/4 inches (7/16 inches-20) x x 13 mm (blue); high edge, 1/4 inches (7/16 inches-20) x 16 mm (red with a lock structure, removing pure copper adapter, sealing with O -shaped ring, longer service life, very suitable for connecting various instruments and using car air -conditioning refrigerant charging work 1 pair of R134A high -voltage and low -voltage fast connections, 1 x puncture type water faucet, 1 x self -sealed tank water faucet valve, 1 pair of R134A to R410/R22 adapter conversion kit, 2 x 1/4 inch downtown head, 1Personal tank adapter 1/2 -inch head to 1/4 inch mother connector, 1 x dual -headed valve core removal, 5 x R410/R22 core, 5 x R134A core, 5 x R134a green rubber cushion ring, 2 x R410A straight appropriate accessories, 2 X R410A angle adapter, a total of 32 pieces Colour:As Shown Material:Aluminum Package Contents: 1 set x r134a refrigerant Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.