CHITRONIC 4-Set Quick Release Propeller Guards Prop Blades Protector for Phantom Series (4 x Black) Snap on/off connection, easy to install, durable and lightweight, a must for beginners and junior users. It fits on Phantom 3 Professional and Advanced. Extra adatper pack for Phantom 1 and 2. Mounting and unmounting takes only seconds. Fits up to 10 inch Props. Tool-free installation. With these prop guard, you will never break your props and crash your Phantom by accidently bump into trees, walls, or any other obstacles. Light weight protect your props from breaking or hurting people.