The UltraPlanetary 1/2in Hex Adapter is designed to face mount to the UltraPlanetary gearbox and provide a convenient 1/2in hex output shaft that is commonly used in the FIRST Robotics Competition. The recommended hardware for mounting the UltraPlanetary 1/2in Hex Adapter to the UltraPlanetary Female 5mm Hex Output Cartridge would be M3x8mm Socket Cap screws, although any M3x8mm hardware can be used.