QUANTUM Giant Stacking Bins are ideal for recycling tasks, parts storage, and prioritizing your work. Reinforced side wall ribs and durable ledges allow bins to stack up to 6 high without shifting. Large handles provide a comfortable grip. Wide hopper fronts ease access to contents. Choose either standard bins or mobile units that roll on four swivel 3" casters (2 with brakes). Mobile bins stack with casters. Sold in lot quantities only. Made in USA.