●Suitable for T-REX 700N series helicopters.●Front drive gear assembly x 1 (Φ5xΦ7.8x53mm) ●Modulus:1 ●Short umbrella gear (24T) x 1 (Φ10.5xΦ7x25.4mm)●Long umbrella gear x 1 (Φ12x8.2mm)