For R134a, R22, and R410a refrigerants. COMPLETE AC TOOL SET: This kit includes a 4-way gauge, 4 color-coded hoses, 2 adjustable 1/4″ quick couplers, a 1/2″ to 1/4″ 29° trap adapter, a 1/4″ to 5/16″ tank adapter, 5/16″ to 1/4″ angled and straight adapters, and a puncture-style can tap.