Features: 1. Application: Special designed front bumper for DJI RoboMaster S1 educational robot. 2. Main function: Provide effective protecting for your DJI RoboMaster S1 Robot. 3. Durable: All aluminum alloy CNC fine carving, anodizing, micro-carving and other processes, the thickness of up to 12mm/0.47inch. 4. Anti-collision: It still has excellent anti-collision performance without affecting the opening and closing of the back cover and the removal of the battery. Effective protecting for RoboMaster S1 robot. Description: Material: Aluminum alloy Size: As shown Package: Style 1: 1 x front bumper, 2 x aluminum columns, 8 x screw, 1 x screwdriver, 2 x crash pad Style 2: 1 x rear bumper,3 x screw, 1 x screwdriver, 2 x crash pad Package List: Choice 1: 1 x Front Bumper 2 x Aluminum Columns 8 x Screw 1 x Screwdriver 2 x Crash Pad Choice 2: 1 x Rear Bumper 3 x Screw 1 x Screwdriver 2 x Crash Pad