The Metro TTM21C Track Shelving Kit is designed for efficient storage solutions with its Super Erecta® Top-Track Mobile Unit configuration. This kit includes essential components such as a sturdy post, durable casters, caster channels, donut bumpers, and roller bearing assemblies, all featuring a sleek chrome plated finish. Each kit is required for one mobile unit, while shelves are sold separately to customize your storage needs. The product is NSF certified, ensuring it meets strict public health standards for safety and quality.