3pcs RC Airplane Spare Part Nylon Hub PU Spoke Wheel Tire 101.6mmx31mm Product Name : RC Airplane PU Wheel;Wheel Size : 101.6 x 31mm/ 4" x 1.2"(D*H) for Shaft Dia : 5.1mm/0.2";Material : PU, Nylon Color : Black Net Weight : 120g Package Content : 3 x RC Airplane PU Wheel