Offered here is a hard to find item, when not purchased as a complete cart set. Typically they are not sold separately. These are wire shelving bin holders. When assembling your own wire Shelving unit, these can be added , on opposite sides to allow for bins, to slide in and out on rails so to speak. In this case they measure 22.5" center to center of the end posts, meaning that would be the depth of your shelving unit, and the bins would slide between the two. Bin selection width would depend on your length - recommend longest length to be used on slide. These can be used for just about anything . . .Could actually slide a solid board in it creating a shelf between as well and use it as needed. On the other hand it could also be used on the outside of the rods as a towel holder or hanger of some sort. This listing is for a pair (2) - 1" x 22.5" shelf tote holders for wire shelving units, PLUS the plastic inserts to mount on corner posts. Very first and last 3 Photos show them in actual usage, and are not included in this listing, are for reference only. I take pride in my pictures, and are a valuable extension of my description. Please take time to see the product fully. Buy with confidence! All items are packaged with great care and shipped next day, excluding any weekends and holidays. I will combine shipping whenever possible as long as the products can be safely packed together. BLOWOUT SPECIALS - CHECK OUT MY STORE, from time to time I will liquidate items, and insert ?BLOWOUT? in the title, which means the item has been deeply discounted and won?t last long . . ! - - - - - - - - - - - ORDERING ? If your ordering more than one item from me, please place in basket and request a revised invoice in order for me to combine shipping. Otherwise it will be shipping cost as shown. While it is possible to refund the shipping cost difference, it cost me time/effort and money to do so, as I have already paid my fees upfront and do not get them back. SHIPPING ? I do my best to ship shortly after ordering, however USPS has been slow in delivery in some cases ? Mostly First Class Mail, in those cases, please be patient. FEEDBACK - Please remember to leave feedback, it helps to keep good sellers . RETURNS ? If returns are accepted in this listing, they must be returned in the same condition as received and in same or similar packaging. fees may not be returned. TAXES ? is automatically taking taxes out depending on states laws ? per government requirements, when checking out, so don?t be surprised if it shows up! As a seller I have to pay fees on your taxes, on your shipping and on your item. (gets payment )