weldon or one-touch shank 19.05mm, 3/4",1 1/4" Dia 12 -100mm DOP 25,50,75,100mm M2 &M35 ... available weldon or one-touch shank 19.05mm, 3/4",1 1/4"Dia 12 -100mmDOP 25,50,75,100mmM2 &M35 materialcoating ... 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