A complete system solution for your microfiber cleaning needs. All the features found in the 9T72 cart, plus. Rubbermaid HYGEN™ Microfiber Charging Bucket platform; folds out of the way for use with Lock 'N Go bucket attachment. Microfiber mop frame holder (holds two frames). Two 30 Quart Storage Bins; perfect for keeping clean and dirty microfiber heads separated and can be removed from either side of cart.