The Adjustable Tote Dolly with a unique design is adjustable in both width and length for use with different size totes. Easy to adjust by loosening the screws and sliding each side in or out. Each unit includes four (4) swivel casters (one with brake) that are attached with caster pads. Overall size in three (3) inches greater than the usable size. Welded steel construction for maximum strength with powder coat blue finish. Totes sold separately.