Check the listing for details. HARDINGE 5C - 3" REGULAR DEPTH COLLET CLOSER - HARDINGE THREAD MOUNT. Condition: Used. Listed at 74.00 USD. Hardinge 3" OC Regular 5C Collet Step Chuck Closer w/ 2-3/16"-10 Threaded Mount. Model #: 3 OC SPECIFICATIONS: Size: 3" Thickness: 1-3/4" Threaded Mount: 2-3/16"-10 TPI Step Chucks are used for accurately holding work up to 6" in diameter. Castings, moldings, stampings and machined parts are held rigidly and accurately. Tubing can be held without crushing or distorting. Accurate gripping, the same as with collets, is yours when you use regular- and extra-depth capacity step chucks for holding larger diameters. Regular-Depth Step Chucks are 3⁄8" larger in diameter than the rated size so the full capacity may be readily applied to a depth of 1⁄2". A regular-depth step chuck closer is required for each rated size. Extra-Depth Step Chucks are made so the full rated capacity may be applied to a depth of 11⁄4". An extra-depth step chuck closer is required for each rated size. Small closing angles are available on step chucks for non-rotating use. Thank you for looking at this item. All items I have are guaranteed to function correctly unless listed as for "parts or repair".The item/s pictured is/are what's included and is/are the item/s that you will receive.If you win/purchase more than one lot/item I will combine the shipping if possible.