Item Type: Linear Guide Product Material: Stainless steel Product Model: MGN12H-200-1R Slider Size: Approx. 45.4 x 27 x 10mm / 1.8 x 1.1 x 0.4in Number of Sliders: 1Pc Slide Rail Size: Approx. 200mm / 7.9in Slide Rail Fixing Bolt Size: M3x8 1,Come with a high rigidity steel ball retainer to ensure safety during transportation and the slider is easy to assemble and use safely 2,Miniature guide rail series adopts two row ball circulation design, and the ball track design adopts Gothic structure 3,45 degrees contact angle, in order to achieve the effect of the square load. The surface hardness of the guide rail is HRC59.5 4,Under limited space system, using larger size steel balls to improve the load capacity and fully demonstrate the high load and high torsion functions 5,The miniature guide rail series are all made of stainless steel hardened heat treated materials, whether it is a slide rail, a slider steel body, and a ball1 x Linear Guide