The Quantum Storage Systems PT-NS is an 8" x 2-1/2" Plate Caster designed for use with a dolly base. With a load capacity of 325 lbs and a ship weight of 4 lbs, it allows for smooth navigation of shelving units with little effort due to its swivel action. The caster comes with pre-drilled holes for easy installation, and its parts can be detached to meet specific requirements. Utilizing pneumatics for mechanical motion, this Plate Caster is ideal for various industrial and commercial applications, providing mobility and efficient handling of heavy loads when used with the appropriate dolly base.