24BB6103 up for sale is a helical tapered spring that is used on the miltiary M939 truck , this conical spring measures 0.667 long just over 5/8 and the big end internally is 0.366 just under 3/8 and the small end is 0.227 just under 1/4 inch , this spring is covered under Tacom number 753806 and also GM General Motors number 2286167 Garwood winch 305094 and Diamond Reo code 1335N2 , also covered under military NSN 5360-00-753-8706 , see our store we add new items like this weekly to our shelfs , thank you rwk