Top Bottom Main Gear Set for DH Double Horse 9101 RC Helicopter Country of Manufacture: CHINA; Brand: Assisi Material: Plastic, Metal; Net Weight: 15g Package Content: 1 Set x DH Helicopter Main Gear; Main Color: Black Fit for: Double Horse 9101 RC Helicopter; Top Gear Size: 20 x 8mm/0.8" x 0.31"(D*T) Bottom Gear Size: Bottom: 48 x 3mm/1.9 x 0.12inch (D*T)