YMYNY Linear Rail Guide, 400 Sliding Linear Guide with Slide Block for Three-Dimensional DIY Printer (400mm)

Simple and easy to use. Beautiful design. High precise and stable performance. Professional and technical rail and block, strong and durable. Small size, light weight, suitable for most automatic equipment. The slider is easy and smooth to move. HLength (optional): approx. 400mm Mounting screw size (not included): M6 (rail), M3 (block) Package list: 1 x Rail Linear Guide 1 x Slide Block ...