... hole saw 1)Variable pitch teeth for faster, smoother cutting and less vibration 2)Application:concrete ,bricker,metal panel hole ... tile setters, home owners, do-it-yourselves,construction workers and other professionals3)Cutting depth:51/60mm4)Diameters from 30mm-125mm5 ... tools, vertical drill machines, lathe, boring/milling machines and other machine tools;6)Packing: In neutral or as your requirement ...