DescriptionSuitable for European standard 2040-series aluminum profiles, adjust the sliding smoothness by adjusting the hex eccentric column. 1pc extruder back support plate with 4pcs pulley. Made of material, these wheels are durable and sturdy. Wheels have good physical, mechanical and chemical properties, and especially have great wear-resistance.Features- Color: Black.- Material: Aluminum alloy.- Size: 5.00X0.60X0.60cm/1.97X0.24X0.24 inch.- The V-slot panel is simple to install, easy to use, small in size, light in weight, easy to carry and store, and has good performance.- Back support plate with pulleys is suitable for V-slot rail, DIY CNC or other systems.- Fold-through slots allow for easy belt threading. V-slot gantry plates are available in various sizes.- Made of material for a long time and durable use.- It has a simple design, but very practical in use, giving you a good using experience.