Need a tough caster for heavy loads? Check out the RWM 47 Series rigid plate caster. It’s built for serious use with a 1050-pound capacity per caster! Features a 5-inch diameter urethane-on-iron wheel that rolls smoothly and is gentle on floors. The wheel is 2 inches wide and rides on a roller bearing. It’s kingpinless (single ball bearing raceway) which makes it super strong for shock loads, tow lines, and abusive conditions – think workshop carts, production line dollies, heavy equipment, or industrial trailers. The mounting plate is 4.5\ x 4\ with slotted holes for 3/8\ bolts. Overall height is about 6.5 inches. Finished in zinc plating to resist rust. Includes a lube fitting for maintenance. If you’re moving heavy stuff in a factory, warehouse, garage, or even a stage setup, these casters are up for the job.