weldon or one-touch shank 19.05mm, 3/4",1 1/4" Dia ... ,50,75,100mm M2 &M35 material coating available weldon or one-touch shank 19.05mm, 3/4",1 1/4"Dia ... to all types of vertical drilling machine, radial drilling machine, milling machine, lathe, etc.We also have Pilot Pin Annular Cutter for magnetic drill machine