Features:Brand new and high quality.Constructed for park fly applications with direct drive brushless motors.Accepts a 7.8mm hex nut on the front or rear of the propeller.Model: 8040Color: orange.Suitable for RC airplane.Package size: 21 * 9 * 2cm / 8.3 * 3.6 * 0.8inPackage weight: 43g / 1.5ozPackage list:5 * 8040 Propeller?