High Speed Steel TMX Interchangeable Pilot Counterbore with Straight Shank.HSS TMX Interchangeable Pilot Counterbore, Straight Shank, 3 Flute, 13/32″ cutting diameter x 3/8″ shank diameter x 3-1/16″ shank length x 4-1/16″ OAL with 5/32″ pilot hole diameter for pilots 3/16″ to 11/32″.
For counterboring and spotfacing – interchangeable pilots provide the advantage of one counterbore size can be used for a number of pilot hole diameters
