Your kit includes 4 shelves, 1 drawer storage bin, 2 notions and accessory boxes and 3 thread storage boxes. Two shelves attach firmly to the right extension unit. In the extra-wide, right-hand drawers the bin slides to the side for easy access. Two shelves attach firmly to the left extension unit. You get three, full capacity thread storage boxes and two notions boxes - each with two levels of compartments. The drawer bin fits in the bottom drawer to create upper and lower storage options. Store rolls of Madeira stabilizer in your drawer bin while you stash your storage boxes on the handy accessory shelves. Remove the drawer bin and fill the deep drawer all the way to the top with fabric and notions. We’ve made sure the five storage boxes fit perfectly in the deep bottom drawer. The drawer bin also fits in the regular-size drawerson the left side. Or... stack your storage right on the work surface; at time of order, you can add-on an additional set of 5 boxes as well as a set of 4 XL thread storage boxes for your 1,100 yard spools and mini cones. Perfect for fat quarters; pull out the bin and work with it on top of the cabinet. At time of order, you can also add-on another drawer storage bin. [+] Roll-over thumb-nails for larger view