I am selling a spanner nut tool for use on a South Bend 13" lathe, and a Fourteen lathe. It is has a 1/2 inch hex that can be used with a wrench or socket to remove or tighten the handle spanner nut. It can be used on any spanner nut that is 9/16" wide with a 5/16" screw. This tool is made out of alloy steel that has been hardened.