ITEM NO.:F5SRP4 DESC.:4 Drawers Mobile Tool Chest ·Double wall construction. Chest can be used separately or stack up a roller cabinet. ·Drawers on telescopic full-extension ball-bearing slides open and close easier as load increases. ·Centralized security locking and self-locking drawer release system. ·Anti-shock protection on all four corners. ·4 wheels 125mm diameter: 2 fixed and 2 castors (1 with brake). ·Folding pulling handle. http://www.chinamobilecabinet.com