Purpose: KG-1096 full-size clamp tool is designed to clamp 3/8-in, 1/2-in, 5/8-in, 3/4-in and 1-in stainless-steel PEX clamp rings onto PEX tubing..Ratchet Mechanism: Ratcheting action to make complete cinch and gauge free clamping. will not disengage until a uniform crimp is completed or the quick release lever is triggered..Capability: For the creating secure stainless steel pinch clamp connections in combination with PEX barb fittings within PEX piping systems in sizes ranging from 3/8 in. to 1 in. Compatible with brass (per ASTM F1807) and poly (per ASTM F2159) crimp style PEX fittings..Applications: Perfect for the DIY homeowner or the professional looking for the perfect way to get started with PEX plumbing. Suitable for making stainless steel clamp ring connections in potable water lines, radiant heat, snow melt, ice rink systems and among other applications. Works for CV boot hose clamps..Fits all PEX cinch clamps except for Zurn Quick Clamp. Ideal for connecting ear clamps to hose.