Check the listing for details. 2pcs Linear Motion Rods 8mmx360mm Round Shaft Guide for 3D Printer DIY. Condition: New. Listed at 27.00 USD. Description:Material: The linear motion rod is crafted from Bearing Steel and coated with anti-rust oil to ensure excellent durability. Its surface is chrome-plated to improve its hardness and provide excellent resistance to rust and corrosion.Chamfer Design: The chamfered ends are specifically designed to make the installation of the bearing easier, providing convenience during the installation process.Installation: Start by gathering the required tools and materials and selecting a suitable mounting location that meets design specifications and space constraints. Insert the linear motion rod into the bracket, ensuring smooth sliding. Secure both ends of the rod to the base or bracket using bolts. Lastly, install the bearing onto the rod.