Wheel COMP; 6"SRT, Mach12, 3/8" PMW Applications: 6"SRT * Sp = Sport * Liq = Liquimatic * S25 = Sport S25 * GSp = Geo Sport * Xp = X-ped * SXp = Super X-ped * GXp = Geo X-ped * X25 = X-ped S25 * Gq = Go-quad * SGq = Super Go-quad * Kp = Know-ped * Gp = Grow-ped * Hvb = Hoverboard * St = Stealth * Tp = Tow-ped * Tp = Tow -ped * SSKU = Super Sport Upgrade Kit * GSRS = GSR Sport * ESRS = ESR Sport Specifications: * Complete * Bearings are 3/8" ID. * Mach 12 plastic wheel. * 6"SRT = 6" Solid Rubber Tire "products".