High Speed Steel TMX Interchangeable Pilot Counterbore with Taper Shank.HSS TMX Interchangeable Pilot Counterbore, Taper Shank, 5 Flute, 1-1/2″ cutting diameter x 4 MT shank x 5-7/8″ shank length x 7-7/8″ OAL with 3/8″ pilot hole diameter for pilots 7/16″ to 1-7/16″.
For counterboring and spotfacing – interchangeable pilots provide the advantage of one counterbore size can be used for a number of pilot hole diameters
