Features: The pack out wheels raise the front of the tool box, which means you not have to tilt it to move it, making it easy to move and without rubbing against the ground. Double wheels can better share the pressure of the pack out toolbox, with better stability, strong load capacity. With brake lock function, the toolbox can be securely locked and prevented from sliding. Heavy duty metal frame can withstand 200lbs of pressure, not need to worry about damage caused by excessive pressure on the toolbox, soft cushioning rubber treads, easy and quiet rolling on smooth or rough surfaces. Easy to Install: without disassembling or drilling holes in the tool box, once installed, it will not loosen over time. Specifications: Component: Stainless Steel Height: about 15cm/5.91inch Package Includes: 2pcs Front Wheels note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.