This is a complete kit for changing your John Deere snowmobile over to plastic skis. These greatly improve handling and reduce steering effort to give your vintage sled modern performance. The kit includes SLP Straight Line Tracking ski bottoms, SLP 6" 60° carbides, SLP black ski loops, black powder coated leaf spring mounts, ski spring retaining pins, insulator pads, and ski pivot bolt kit. Green, orange, and blue ski loops are available for this kit upon request. Just send us a message when you order. This kit may be used on other makes of leaf spring snowmobile that has a 2" wide by 25-27" long spring. Please contact us before purchasing for other makes with your spring dimensions so we can verify for fitment.