Complete your Rubbermaid? Commercial cleaning cart with a filter bucket using the Lock 'n Go attachment kit. Assembly fits Rubbermaid? Commercial High-Capacity Cleaning Carts and Rubbermaid? HYGEN? Microfiber Cleaning Carts. Accessory Type: Attachment Kit; For Use With: Rubbermaid? Commercial Cleaning Carts; Material(s): Plastic/Metal; Color(s): Black.