This Sunnen honing mandrel is an original and highly reliable tool for honing tasks. It comes with shoes and stones to provide an efficient honing experience. The mandrel has a 2.5-inch diameter and is designed to fit Sunnen rod machines. It is in good used condition and has not been modified. The mandrel is manufactured in the United States and is branded as Sunnen. It falls under the categories of Mandrels, Toolholding, Workholding & Toolholding, CNC, Metalworking & Manufacturing, and Business & Industrial.