(2 Pack) BPV-31 Bullet 3-in-1 Line Tap Piercing Valve Access for Air Conditioners HVAC 1/4", 5/16" and 3/8" Tubing

Easy to attach and worked as it should

Worked perfectly

Could not use

I usually buy the Supco brand, this time I needed them faster and the price was also lower so I tried these,they are not as good. You get what u pay.