This product is aircraft accessory. No matter where the throttle stick is in any position, the engine will not start immediately. They can be the perfect gift for your friends who like to play aircraft. These accessories can be great for replacing the old or broken spare parts. Features -Color: As shown -Material: Plastic and alloy -Packaging Size: 25.00x14.00x5.00cm/ 9.84x5.51x1.97inch -Electronic speed-controller: 30A. -Electrical machinery: 1000KV. -More strength, the ESC can increase the flexibility of the quadcopter. -These accessories can be great for replacing the old or broken spare parts. -Made of premium alloy and plastic material, sturdy and durable to use. -They can be the perfect gift for your friends who like to play aircraft. -No matter where the throttle stick is in any position, the engine will not start immediately. Package list: 2 x Set of Aircraft Accessories