3pcs RC Model Airplane Aircraft Landing Sponge Wheel D90mm H30mm d4mm Product Name : RC Airplane Sponge Wheel;Wheel Size : 90 x 30mm/3.5" x 1.2"(D*H) for Shaft Dia : 4mm/0.16";Material : Sponge, Plastic Color : Black, Gray Net Weight : 77g Package Content : 3 x RC Airplane Sponge Wheel