These very popular lighting stands for Baby fixtures, which require a 5/8" mounting pin, are made with steel legs and riser assembly. The tripod braced base with 'all-axis' non-marking locking casters provides great stability. Matthews casters are not cheap, but when you are buying wheels you get what you pay for. Matthews casters are non-marking and lock in the caster position as well as rotationally. Made from steel components - not plastic - and will provide years of durable service.