Smooth ball bearing suspension; 90% extension on file drawer, 75% extension on box drawers. High-sided file drawer for front-to-back letter-size filing with crossrails included. Pencil tray in top box drawer. HONÂ® "One Key" interchangeable lock core. Counterweight inhibits tipping when opening more than one drawer. Fixed front casters and swivel back casters for easy mobility. Fits under 29-1/2" high workstations.