This Wheelie Bar Set is manufactured from tough material for long-lasting durability and performanceFeatures:Precision molded from tough composite material - Fits to vehicle wing mount - Each wheels rolls on two high-quality ball bearings for smooth, fast rolling action - Wheels have rubber tires securely attached to them - Conveniently supplied assembled with mounting screws ready to install on your vehicleIncludes:1 x Wheelie Bar Assembly 4 x M4 x 30mm Button Head Screw