Robinair 42090 Ratcheting Tubing Cutter for 5/16" to 1-1/8" Tubing Robinair's Ratcheting Tubing Cutter is designed for use in confined spaces Unique ratcheting action operates like a socket ratchet to cut copper, aluminum, steel, stainless steel, and PVC pipe and tubing Spring-loaded adjusting screw applies continuous pressure while cutting Cleanly cuts tubing or pipe from as small as 1/4 inch OD all the way up to 1-1/8 inch OD Replaceable cutter blades are made from high quality, shock-resistant, tool steel with heat treating to resist breakage and last longer