This rolling scaffold has locking wheels and two adjustable-height step boards. Hardware Type: Scaffold unit, Capacity (lbs.): 550, Dimensions W x D x H (in.): 43 x 20 x 60, Material Type: 1in. tube frame, Color: Yellow (frame), black (platform), Platform Size W x D (in.): 44 x 8 (2), Caster Type: Locking rubber wheels, Caster Size (in.): 5