THIS COMMAND CAT50 3/4" END MILL TOOL HOLDER FEATURES A CAT50 TAPER SHANK. TECHNICAL SPECIFICATIONS INCLUDE A 5.75-INCH PROJECTION, A BODY DIAMETER OF 2.75 INCHES, AND A BORE DIAMETER OF 0.75 INCHES. THE OUTER BORE DIAMETER MEASURES 1.75 INCHES, AND THE OVERALL LENGTH (OAL) IS 10 INCHES.