THE LYNDEX C40S7-1000 IS A CAT 40 TOOL HOLDER WITH A PART NUMBER OF C40S7-1000. THIS HOLDER FEATURES AN OVERALL LENGTH (OAL) OF 6” WITH THE BUTTON, A PROJECTION OF 2-1/8”, A BORE DIAMETER OF 1.375 INCHES, AND A BODY DIAMETER OF 1.75 INCHES. NOTE THAT THE NUT IS NOT INCLUDED WITH THIS TOOL HOLDER.