6pcs RC Airplane Aircraft Sponge Wheel D40mm H11mm d2.5mm Black Lime Product Name : RC Airplane Sponge Wheel;Wheel Size : 40 x 11mm/ 1.6" x 0.43"(D*H) for Shaft Dia : 2.5mm/0.1";Material : Sponge, Plastic Color : Black, Lime Net Weight : 10g Package Content : 6 x RC Airplane Sponge Wheel