Mastercool Universal R1234yf Master Kit (58490-YF)

Universal R1234yf Master KitPerfect tool for replacing damaged valve cores with R1234yf refrigerant in the system without losing the systems chargeAttaches to R1234yf service ports to quickly and easily remove and replace valve cores without the loss of refrigerantBall Valve design with stainless steel ball provides smooth movement and durabilityKit covers 17 mm and 14 mm high and low side service ports