The Studica Robotics Expansion Kit - Hex-Shaft is a comprehensive parts and components bundle designed to expand your robotics builds, prototype mechanisms, and classroom engineering projects. Packed with a wide range of structural components, the kit includes a variety of U-channels, flat and L brackets, hex-shafts, shaft collars, bushings, flange bearings, spacers, shaft hubs, and precision gears — giving you the foundational hardware to build frames, motion systems, linkages, and custom mechanisms.