Performance Tool Tapered Reamer Set With T-handlePerformance Tool Tapered Reamer Set with T Handle Tapered Reamers will help align holes, remove burrs from cut pipe, tubing, and conduit, and enlarge and countersink holes in sheet metal, plastic, and other materials The Heat treated #45 High Carbon steel for longer service life T handle design for easy turning and sure handling Capacity: 1 8"e; to 1 2"e; (3 13mm) and 5 32"e; to 7 8"e; (4 22mm) Degree of taper: 5. 06 degree 1 8 in. to 1 2 in., and 10.