Specifications: Diameter: 6mm / 0.24"; Length: 100mm / 3.94"; Material: Bearing Steel Material: The linear motion bar is made of ball bearing steel and coated with anti-rust oil to ensure excellent durability. The surface is chrome-plated, increasing hardness and providing excellent resistance to rust and corrosion. Chamfer Design: The chamfered ends are specially designed to facilitate the installation of bearings, providing convenience during the installation process. uxcell 2pcs Linear Motion Rod 6mm x 100mm (0.24 x 3.94") Case Hardened Chrome Plated Linear Rail Shaft Round Guide Applicable to 3D Printer DIY CNC Metric h8 Tolerance ----------------------------------- ◎ Please understand that items are stored at home, simply packaged, and shipped using recycled materials. ◎ Please check the actual photos for the condition of the product. ※ Some parts may be quoted from websites. To offer the product at a slightly lower price, it may be shipped without the box due to shipping costs. ⚠️ The item has been opened once for inspection, so it is listed as "Like New". #See all of shuu's products here 65-103 01.18