Mastercool 85530 3-IN-1 Side Mount Can Tap Valve Like having three tools in one the side entry can tap will work on all R134a (2 7/8"), R12 (2-1/2") and oil charge (2") cans 1/2" ACME-Male and 1/4" FL-Male fittings with an internal check valve to prevent system backflow The "pliers style" grip is easy to use and has a positive locking latch to insure secure engagement Not for sale in California