Pull-out lock / individual locking - these features prevent the drawers from being removed or falling out unintentionally * Many variations - the Sortainer is available in many configurations: 12 small drawers, 6 small plus 3 medium, and more * Access from both sides - all parts are instantly accessible from either side * Systainer port - the mobile storage system can be adapted to Systainers of any size; Systainers and Sortainers can be stored safely, while saving space (stationary or mobile options) * Rolling base - upwardly mobile, the rolling base enables quick transport from one location to another, whether in your workshop or on the jobsite (sold separately)