Features: <br> <br>Simple and easy to use. Beautiful design. <br>High accurate and stable performance. <br>Professional and technical rail and block, strong and durable. <br>Small size, light weight, suitable for most automatic equipment. <br>Slider could easily and lightly move. <br> <br>Specification: <br>Material: Metal <br>Type: Slide guide rail <br>Slide track: Linear guide rail <br>Accuracy level: H <br>Length(Optional): Approx. 250mm/9.8in, 300mm/11.8in, 400mm/15.7in, 500mm/19.6inch, 550mm/21.6in <br>Installation screw size(not included): M6(Rail), M3(Block) <br>Weight: 217-417g <br> <br>Package List: <br>1 x Linear Guide Rail <br>1 x Slide Block<br>1、Simple and easy to use. Beautiful design. <br>2、High accurate and stable performance. <br>3、Professional and technical rail and block, strong and durable. <br>4、Small size, light weight, suitable for most automatic equipment. <br>5、Slider could easily and lightly move. 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.