Flair-It 30760 PEXLock 3/8" Clamp 3 PackPexlock clamp.. A high grade M polymer that resists freezing, cracking and extreme heat Pliers lock pexlock in place Nothing to calibrate Pexlock is removable and reusable A small blade screwdriver releases the lock mechanism Can be used with PEX a, B and C as well as approved polyvinyl braided tube Pexlock is mated to flair it's ecopoly Insert clamp fittings; The largest plastic fitting and valve offering for all PEX