The Rocelco Standing Desk Converter Bundle is the perfect way to get your ergonomic workstation started. It comes with a Sit to Stand Desk Riser and a Dual Monitor Mount. The Rocelco Standing Desk Converter provides the proven health and energy-boosting benefits of alternating between sitting and standing during your work day, which also reduces back strain and pain. The sturdy steel frame with easy-grip side handles and pneumatic gas piston assist, allows you to easily raise 40lbs on the large 45" x 22.6" desk riser top, into infinite heights between 4.7" and 17.5" above your existing tabletop. Dual-piston lift system provides smoother more precise height adjustment with a wide range of weight on the desktop, compared to single-piston lift systems. This Sit to Stand Up Desk offers a large 28.7" x 9.6" retractable keyboard tray that slides in, pulls out and locks into place for easier access to entire desk riser top while also helping you to get into the most comfortable and ergonomic work position. The computer workstation can hold 3 monitors up top and a laptop on the keyboard tray or a large monitor and a laptop on top with keyboard on the sliding tray. Your new desk riser comes with anti scratch foam rubber pads so it can be placed directly on your current work surface and safely keep it from moving around. Tired of a cluttered desk, free up desk space by using the conveniently placed grommet hole to route cables and install the included dual monitor mount.