These robust tools are designed to cut PE pipe thicker than SDR17 within 1/8in (3 mm) of square on up to 12in (315 mm) medium and high density pipe so that no facing is needed for electrofusion and only minimal facing for butt fusion joints. Its durable, Teflon?-coated blade makes many square cuts with no chips to clog valves and small openings. Blades easy to sharpen or replace. Tapered blade makes straighter cuts and lasts longer because it's not prone to breakage like pointed blades. Safer than abrasive saws because no PE chip residue remains in the pipe that may later clog valves.