THE LYNDEX B4006-0312 IS A CAT40 END MILL HOLDER DESIGNED FOR MACHINE TOOLING. THIS CUTTING TOOL HAS A PART NUMBER OF B4006-0312 AND BELONGS TO THE B4006 SERIES. ITS HOLE DIAMETER MEASURES 5/16 IN, AND THE NOSE DIAMETER IS 0.87 IN. THE OVERALL LENGTH (OAL) IS 5 IN W/O BUTTON, WITH A PROJECTION OF 2-3/8 IN. THE SHANK IS A BT TAPER TYPE WITH A BT40 TAPER SIZE AND A BT40 SHANK CONNECTION SIZE. THE SYSTEM SIZE MACHINE SIDE IS ALSO BT40.