3pcs RC Model Airplane Aircraft Landing Sponge Wheel D75mm H21mm d4mm Product Name : RC Airplane Sponge Wheel;Wheel Size : 75 x 21mm/ 3" x 0.83"(D*H) for Shaft Dia : 4mm/0.16";Material : Sponge, Nylon Color : Black, Beige Net Weight : 38g Package Content : 3 x RC Airplane Sponge Wheel