These bolt-in stem casters have a square stem that fits into structural framing made of square or octagonal metal tubing or angle iron. The casters have zinc-plated steel frames and double ball swivel bearings that allow the caster to swivel smoothly. These stem casters can be attached to carts, racks, and similar equipment that are built from structural framing. They are used in the maintenance, construction, and transportation industries.

These bolt-in stem casters have a round stem that fits into structural framing made of round metal tubing. Each caster has a total-lock brake that can be engaged to prevent the caster's wheel and swivel mechanism from moving. Sometimes called scaffold casters, these casters are used on light-duty scaffolding, work platforms, workbenches, and tables that will be moved frequently but must be kept stable and immobilized when people are using them. They can help prevent injuries that may be caused if the casters roll or turn unexpectedly. These casters have zinc-plated steel frames and double ball swivel bearings that allow the caster to swivel smoothly. They are suitable for janitorial, maintenance, painting, electrical, and construction applications.