With BPV31 Bullet Piercing Tap Valve for A/C Refrigerant System R134a/R-12/R-22
【BPV31 PIERCING VALVE】: Piercing valve compatible with Bullet BPV31,it’s for HVAC System: 3-In-1 Line Tap Piercing Valve for Bullet; 3-In-1 Line Tap Piercing Valve fits 3 different sizes of tubing: 1/4″, 5/16″ and 3/8″.