5X 3.17mm Sliver Bullet Propeller Adapter Holder For RC Brushless MotorDescription: Item Name: Bullet propeller adapterColor: SilverMaterial: AluminumMotor Axle Hole Diameter: 3.17mmSize: 3.17XM5Quantity: 5pcsFeatures :High quality aluminum material.Suitable for brushless motors.Package Included :5x 3.17mm Bullet Propeller Adapter Holder