Professional technical guide rails and stoppers, sturdy and durable Small size and light weight, suitable for most automation equipment High precision, stable performance, work The slider can be moved and is convenient to use Suitable for semiconductor manufacturing equipment, circuit board IC assembly equipment; small linear sliding devices such as robotic arms, precision measuring equipment, office automation equipment, etc. Mini linear guide rail, MGN12H slide rail for 3D printer accessories. Widely used in small linear sliding devices such as semiconductor manufacturing equipment, circuit board IC assembly equipment, robotic arms, precision measuring instruments, office automation equipment, etc. Product name: MGN12 linear guide Type: Slide Slide: Linear guide Mounting screw size (not included): M6 (rail), M3 (slider) Colour:silver Material:Metal Size:400mm Weight: 300g Package Contents: 1 x MGN12 linear guide 1 x MGN12H slider Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.