Feature 1The slider has a high-rigidity ball retainer to ensure safety during transportation and is easy to assemble during use. 2The miniature guide rail adopts a tworow ball circulation design with a contact angle of 45 and a uniform load. 3The guide rail uses larger size steel balls to fully demonstrate the high load and high torsion functions. 4The slide rails, sliders and balls are all made of stainless steel hardened heat-treated materials, which are rust and corrosion resistant. 5Use standard bolts to fix, can run stably and not easy to slip, and can be accurately positioned. Item Type: Linear GuideMaterial: Stainless steelModel: MGW12C-500-2RSlide Block Size: Approx. 46 x 40 x 10.5mm / 1.8 x 1.6 x 0.4inSlide Rail Size: Approx. 500mm / 19.7inSlide Rail Fixing Bolt Size: M4 x 8 Package List 1 x Linear Guide Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Dadangjia