Derailleur Battery Cover for Sram AXS GX X01/EAGLE/XX1/ AXS Bike Battery Protector Cover Prevent Bumping Heat Dissipation Light Weight, One Size, BlackFeatures: Specifications: Material: ABS Size: about 5*3.5*4CM Weight: about 7.6g Colour: black Components: Derailleurs Applicable model: SRAM GX X01 XX1 Mountain AXS electronic variable speed rear de..