SharkBite Deburr & Gauge Tool (1/4 in. – 1 in.)Mark proper insertion depth for SharkBite Universal fittings, as well as deburr pipe with a simple rotation of the tool once the pipe is inserted. Features and benefits: Compatible with PEX, copper, CPVC, PE RT and SDR 9 HDPE pipe. Used to deburr the outside of copper pipe to remove any sharp sections or burrs. Lightweight and durable plastic construction.