The Audio2000'S AST421X is a heavy-duty flat panel/TV monitor stand with 5 wheels for mobility. The AST421X stand includes two flat-panel mounting plates which are compatible with VESA 200x200, 200x100, 100x100 and 75x75 hole patterns and also includes 4mm, 5mm and 6mm screw sets. The AST421X stand, constructed with heavy duty steel, includes security pin and comfort twist knob to securely lock in height adjustment to have adjustable height. The AST421X stand is ideal for portable screen display placement, easy setup and storage. The flat-panel mount features a convenient tilt angle adjustment mechanism for better viewing with novel tool-free knobs. Overall, the AST421X is a heavy-duty high-quality flat-panel TV monitor stand while the setup of the AST421X stand is easy and all necessary assembly and mounting hardware are provided.