APPLICATIONS: Automation equipment, professional 3D printers, workbenches, lasers, stands, furniture, etc. machinery, fitness equipment, precision printers, automatic cutting machines, etc. Great DIY 3030 aluminum extrusion is a great framing material that offers endless architectural possibilities for your ideas, it allows for a variety of combinations and reuse, and is easy to assemble. HIGH QUALITY: High-strength European standard aluminum profile, the surface is anodized, making the surface smoother and cleaner. 30 series aluminum extruded profile T-slot made of 6063-T5 material, smooth surface, strong structure and long service life. Compatible with all Series 30 fasteners and accessories. 4PCS per package, 30mm * 30mm * 1500mm.