Check the listing for details. Starrett 11215-0 Nut ONLY for 657Y Indicator Attachment. Condition: New, Made in United States. Listed at 7.00 USD. 11215-0 Nut ONLY for 657Y. One End, Other End Threaded, Fits Lug Backs of AGD Indicators, Fits Series 80, 81, 25, 655, 656 Last pic of 657Y is for reference only as to the tool this nut attaches to.