Premium Brand products are considered heavy-duty and commercial grade engineering supplies. They are made with thicker materials, larger and stronger made components where needed, and for the Professional or Commercial User. Designed and made for the commercial user, these products are made to last and stand up to the demands of daily use. The paint is better, the welds are bigger and stronger, the casters have wider wheels and larger shanks and ball bearings. Premium Brand products include Blueprint Racks, Blueprint Storage Stands, Blueprint Wall Racks, Drawing Clamps, Drawing and Map Storage Racks, Drawing Hangers, and a Drawing Stick File Wrench.