1、The slider has a high rigidity retainer, the slider is easy to assemble and use, and it is easier to slide. 2、The linear guide is a two-row ball circulation design with a contact angle of 45° to achieve a balanced load. 3、The slider is designed to be widened and uses larger size steel balls to fully demonstrate high load and high torsion performance. 4、Using stainless steel hardened heat-treated material, anti-rust and corrosion-resistant, the surface hardness of the guide rail reaches HRC59. 5、The linear guide is rolling friction, when the bed is running, there will be no slipping situation and can be accurately positioned. 1 x Linear Guide Item Type: Linear GuideMaterial: Stainless steelModel: MGW9C-200-1RSlide Block Size: Approx. 38.3 x 30 x 9mm / 1.5 x 1.2 x 0.4inSlide Rail Size: Approx. 200mm / 7.9inSlide Rail Fixing Bolt Size: M3 x 8