It is recommended to utilize M3 T nuts and screws when attaching it to a 20 series EU aluminum profile.
There are two rubber stoppers on each side of the linear rail to prevent the sliding block from falling out.
Block: MGN12H ball bearing carriage. Block material: Stainless Steel. Blocks are pre-loaded, Linear motion guide is widely used in industrial robots and CNC and other large transmission equipment, cleaning and supporting equipment, Ender 3 series/CR10 series 3D printers, etc.
Surface technology: The surface of the linear guide is oxidized black to prevent rusting.