THE COMMAND B2C4-0011 IS A QUICK CHANGE TOOL HOLDER WITH A CAT30 TAPER TYPE. ITS OVERALL LENGTH (OAL) IS 5.78 INCHES, WITH A PROJECTION OF 2.91 INCHES. THE BODY OUTSIDE DIAMETER (OD) MEASURES 0.63 INCHES, AND THE BORE INSIDE DIAMETER (ID) IS 0.75 INCHES. THE PART NUMBER IS B2C4-0011 AND THE BRAND IS COMMAND.