Vestil's Ergonomic Handle Carts with Drain has the patented ergonomic handle that decreases fatigue by allowing the operator to easily maneuver the cart. The ergonomic handle has an invertible bolt-on chrome design that is great for individual height comfort and handling. The top shelf has a perimeter retaining edge that is slightly slanted towards the drain hole which gathers debris. To use the drain system, simply turn the ball valve to empty liquid into container of your choice. Each unit rolls on two (2) rigid and two (2) swivel casters with roller bearings.