3mm 3 17mm Aluminum Bullet Prop Adapter Propeller Holder Description Item Name Prop adapterMaterial AluminumColor BlackMotor Axle Hole Diameter 3mm 3 17mm optional Output Shaft Diameter 5mm 6mm optional Quantity 1Note 3 0mm prop adapter only suitable for 3 0mm shaft motor 3 17mm prop adapter only suitable for 3 17mm shaft motor 5mm output shaft requires 5mm hole diameter propeller 6mm output shaft requires 6mm hole diameter propeller Package Included 1x Prop Adapter