The Keter Stack N'Roll System provides a safe and reliable way to transport, store, or move materials up to 440lbs. The system’s efficient design maximizes the stacking of up to 4 shelves and allows for easy transport with 4 embedded caster wheels. With its durable plastic construction, the Keter Stack N'Roll System is perfect for quick, high volume storage and movement of essential materials. Ideal tool storage solution with in cross system for DIYers, crafters and hobbyists Lightweight cart with ergonomic one-click release button handle, side grips for secondary lifting option and metal telescopic handle Multiple sized removable bins for custom configuration & Transparent, polycarbonate lid to offer easy visibility Stackable, interlocking modular connectivity that allows multiple configurations 7" durable wheels, heavy duty metal latches with audible closing indication. Padlock eyelet for lockability (lock not included)