... 3.Better chips clearance 4.High precise drilling Bimetal Hole Saw isdesigned to cut accurate holes in various kinds ... portable electric drill, air tools, hydraulictools, drill presses, lathes, boring mills, milling machines.Features1. Featuring the high speed steel edge ... electric or pneumatic tools, vertical drill machines, lathe machine, boring mills.5. Supplied in various width, tooth type, and ...