Cuts holes in sheet metal, pipe, plastic, and wood up to 1/4" thick
Special design helps prevent clogging so cutting need not be interrupted to clear chips
Includes seven high-speed steel cutters (5/16, 3/8, 7/16, 1/2, 9/16, 5/8 and 3/4"), an arbor with a spring-loaded pilot guide, a hex wrench, an extra pilot, stop and spacer washers