This is a set of four Kyosho Racing Slick Tires. These slick tires are used with the Mini-Z Racer series kits.
 
Wide high-grip tires similar to standard slick tires. 3 different hardness types in the line up.
 
Choose from 10, 20, 30 or 40 Shore compounds (softest to hardest). Use different compounds to tune the level of traction for various track conditions; softer when you need more grip and harder when you want less grip.