It is secure enough to absorb kinds of steel plate

LCD Display - Designed with a clear display LCD screen (128 x 64 pixels) - white backlight and contrast adjustment

Maximum weight capacity: 350 lbs

switch off the device and remove the  battery

2-Shelf Economy Bookcase - Gray It is secure enough to2 Shelf Economy Bookcase Gray Economical, sturdy, and strong with the ValueMate Bookcases you can't go wrong The shelf and exterior of the bookcase are constructed of steel and the back is made of solid fiberboard. Attractive, plastic snap in radius corners make assembly easy and add to the overall strength of these units. Generous 12" deep shelves accommodate 3 ring binders and large publications. Includes two shelves. Gray finish. Weights &