Apollo offers a wide variety of PEX Tools. The Apollo PEX Quick-Cinch Clamp Tool is compatible with 3 sizes of stainless steel crimp rings. Tool does not release until the fasten is complete. Ratcheting action to complete crimp. For use with 3/8 in., 1/2 in. and 3/4 in. stainless steel pinch clamps Meets ASTM 1807 Standard 100 lb. crimping force Not for removal of PEX clamps Not for use with Zurn Qickclamp crimp rings Calibration Gauge and Bar Tool included for recalibration when needed.