High Speed Steel TMX Interchangeable Pilot Counterbore with Taper Shank.HSS TMX Interchangeable Pilot Counterbore, Taper Shank, 5 Flute, 1-9/16″ cutting diameter x 4 MT shank x 5-7/8″ shank length x 8-1/8″ OAL with 7/16″ pilot hole diameter for pilots 1/2″ to 1-1/2″.
For counterboring and spotfacing – interchangeable pilots provide the advantage of one counterbore size can be used for a number of pilot hole diameters
