CNCMANS 4pcs 500mm Linear Shaft Ø8mm Linear Rail 500mm Linear Guides Precision Shaft with 8pcs SK8 Horizontal Bracket and 8pcs SCS8UU Linear Bearing Block for 3D Printer

["500mm Linear Shaft: These linear 8mm shafts are made of high-quality bearing steel, which has good durability and high hardness to ensure long-lasting performance.","High Quality: The surface of the linear rail shaft is well processed to provide you with a smooth grip, it is also rust and corrosion resistant to provide a nice appearance.","Easy Installation: SK8 bracket with pre-drilled holes for easy assembly. Suitable for X, Y, and Z-axis.","Energy Saving: The structure of a high-density aluminum alloy makes the slide block highly load-bearing. Low friction and smooth movement save energy.","Low Noise: Ball running in the cage loop to create a smooth ball guiding surface, ensuring low noise even during high-speed operation."]