TEN-HIGH CNC Linear Guide SBR20 Linear Rail 1000x20mm Carbon Steel Product Description: The TEN-HIGH SBR20 CNC linear guide with a length of 1000 mm and a diameter of 20 mm is a reliable component for industrial, hobby and professional mechanical projects. Made of high-quality steel, the guide has been induction-hardened for exceptional durability, wear resistance and a long service life even with heavy use. This makes it much more durable than standard steel shafts, which can be deformed or shortened in the duty cycle.