Designed to improve grip and control during aggressive riding and maneuvers. Stay connected with your sled's handlebars and feel good doing it. Constructed of extremely durable UHMW, these are resistant to shattering on impact. Some handlebars may require you to drill out the bar-end to allow the hook to slide in. These are not intended to work with chromoly/steel bars due to the large inside diameter of that style handlebar. These are designed to fit most aluminum snowmobile handlebars that have a straight profile (no bends at the ends)..