Offering a simple and economical solution for creating a visual barrier in a variety of retail and professional environments, the Mr. Chain Loading Dock Kit lets you customize your barrier to fit your needs. To use the magnet ring and Carabiner kit, simply put the carabiner on the magnet ring, stick the magnetic end on any metallic surface, add a plastic chain in the length you need for your specific application and finally attach the sign. By visually warning those in and around loading docks, this kit is a great choice for areas where OSHA requires only a visual barrier. The Mr. Chain Loading Dock Kit can be assembled in seconds to mark off aisles in retail stores, warehouses, or distribution centers. Color: Red/White.