General description This set includes 2 linear shafts, 4 vertical bearing supports, and 4 ball bearings, designed for smooth and precise linear motion. Technical specifications Linear shaft diameter: 8 mm Linear shaft length: 500 mm Support dimensions: 42 x 32 x 14 mm (aluminum alloy) Ball bearing dimensions: 34 x 30 x 22 mm (steel) Usage Ideal for applications requiring low friction and high precision in linear movement. Suitable for various DIY and home improvement projects.