Item Type: Linear Guide Material: Stainless steel Model: MGW12C-400-1R Slide Block Size: Approx. 46 x 40 x 10.5mm / 1.8 x 1.6 x 0.4in Slide Rail Size: Approx. 400mm / 15.7in Slide Rail Fixing Bolt Size: M4 x 8 Package List 1 x Linear Guide 1The miniature guide rail adopts a two-row ball circulation design with a contact angle of 45 to achieve a balanced load. 2The slider is designed to be widened and uses larger size steel balls to improve load capacity and high torsion performance. 3The slider has a high-rigidity steel ball retainer to ensure safety during transportation and is easy to assemble and use. 4The slider steel body and balls are made of stainless steel hardened heat-treated materials, and the surface hardness of the guide rail reaches HRC59.5. 5The linear guide is miniature, stable in performance, and widely used in automated linear motion equipment.