ITEM NAME:Rear Bumper for Dji Robomaster S1 Intelligent Educational Robot Anti-Collis X7G1 Rear Bumper for Dji Robomaster S1 Intelligent Educational Robot Anti-Collis X7G1 Compatible Drone Brand: DJI Model Number: Rear Bumper Weight: 50g Package: Yes Color: black + grey Material: aluminum alloy Size: 5.8 * 1.4 * 13.9cm Compatible Drone Model: RoboMaster S1 Package Contents: 1 * protection bar 2 * non-slip mats 3 * screws 1 * screwdriver.Compatible Drone Model: RoboMaster S1. Model Number: Rear Bumper. 2 non-slip mats. 1 protection bar. Weight: 50g.