The new TTech Emax GT series brushless motors feature more power and efficiency than previous Emax motors. Motors include accessories for: Backplate mounting with bolt on prop driver or standard mounting. Collet style prop driver. GT2215/09 KV: 1180 Battery(Lipo): 2-3S Shaft Diam: 4mm Prop: APC 10 x 4.7 / 10 x 5 / 10 x 6 Max Watts: 312 Max Thrust: 1250g Weight: 70g Model Weight: 600 - 1100g