The Armour Line RP77271 Pipe and Tubing Reamer removes rough edges of tubing; Helps provide a clean working surface prior to assembling tubes; Removes burrs on tubing 1/8 in; to 1 5/8 in; in diameter; Grooved durable hard plastic body for better grip; For use on PVC pipe and copper tubing only; Prepares tubing for soldering, removing sharp edges; Constructed of long wearing steel blades. If too much force/pressure is used it will cause damage to your tubing or pipe.