This Baby Stand is new and improved with square legs for more stability. Held together with nuts and bolts instead of rivets, field repairs are possible. The small footprint of this stand makes it ideal for use in tight spaces. Black steel legs with 3 aluminum risers with 4 sections. TECHNICAL SPECIFICATIONS: type 21 attachment; closed length: 15.75 in.; black color; column tube diameter: 25.22.19.16mm.; footprint - maximum diameter: 17.72 in.; load capacity: 4.41 lbs.; material: leg and column in steel, risers in aluminum; maximum height: 47.24 in.; minimum height: 15.75 in.; 4 sections; weight: 2.09 lbs. This replaces the A615B.