Product details:

Jancy Slugger 1 3/8 Sheet Metal Cutter has 1/4 depth of cut and features center-free design that eliminates deflection and leaves smooth bore in work piece. Cutter has key driven shank and produces infinitely more accurate holes than common bi-metal hole saws. It is designed for use with hand held drilling equipment and drill up to 3 times faster than hole saws and has superior tool life. It quickly installs to most hand drills, accepting a full range of cutters. It is ideal for HVAC, electrical and maintenance contractors. It offers increased productivity with efficient use of drill power and has high-speed steel for use on a wide variety of materials. It has bright coating for use on a broad range of materials.