THIS IS A PARLEC CAT50 C50-10EM8 END MILL HOLDER, FEATURING A CAT50 TAPER. KEY SPECIFICATIONS INCLUDE A NOSE DIAMETER OF 2.000 INCHES, A PROJECTION LENGTH OF 8.000 INCHES, AND A BORE SIZE OF 1 INCH. THE TOOL HOLDER ALSO HAS A SOCKET DEPTH OF 4.440 INCHES. THE MANUFACTURER PART NUMBER IS C50-10EM8.