THE COMMAND B2E4-0750 BT30 END MILL HOLDER, PART NUMBER: B2E4-0750, IS DESIGNED WITH A CAT30 TAPER TYPE. ITS OVERALL LENGTH (OAL) MEASURES 5.82 INCHES, WITH A PROJECTION OF 2.92 INCHES. THE BODY OUTSIDE DIAMETER (OD) IS 1.75 INCHES, AND THE BORE INSIDE DIAMETER (ID) IS .75 INCHES. THIS TECHNICAL TOOLING COMPONENT IS MANUFACTURED BY COMMAND.