The FTP "Floating" bumper bolt kit allows the rear bumper mount to float and not bind on the hardware. No need for additional backup mounts, cables, etc. or the need to run the mounts sloppy loose to free up the kart. No special tools needed. Fits most karts, CRG, OTK, Tony, Kosmic, Intrepid, Praga, OK1, etc. Available in 28, 30 or 32mm (Outer Diameter measurement). Sold Individually.