Weather Guard 174501 4.1Cubic Feet Lo-Side Black Aluminum Tool Box ONE-TOUCH latch mechanism and trademarked RED PUSHBUTTON features a powder coated aluminu, automotive style latching system. Low profile box that mounts on the side rail of your pick up truck. Can be used separately or in combination with Cross or Saddle Boxes. J-hook mounting requires no drilling of holes in the rails EXTREME PROTECTION Lock  protects against break-ins and has tamper-esistant retracting lock 90 cover opening for easy access