Locking Mechanism Rotate both levers all the way to the end to operate the heights. Modern Design Unique Modern Design of the Controller. How to operate Step1: Rotate both levers all the way to the end. Step2: Maintain pressure on the levers until you are done adjusting to the desired height. Any heights position between 4" and 16" high. Smoothly adjusts to any heights position between 4" and 16" high. Locking Mechanism Levers Controller Raise/Lower The Desk Heights Position Best about our desk riser Easy Smooth Height-Adjustable Smoothly adjusts to any heights position between 4" and 16" high.Two high quality of class 4 pneumatic cylinder. holds up to 60 lbs. Movable monitor riser The monitor riser can be used separately depending on your needs/preferences. Sliding Drawer Organize your office supplies for your daily needs.Helps to keep your desk clean and organized. X-Shaped design Move vertically straight up and down.Offering stabilization and save space when operating.Made by strong steel with fashion powder coat finish design to ensure durable resulting in long-lasting use. SHW SIT & STAND - Adjustable Desk Riser allows you to find that needed healthy balance between sitting and standing up throughout the day. OD-09A-K OD-09B-K OD-09C-K OD-05A-E OD-05B-E OD-02A-E Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Customer Reviews 4.5 out of 5 stars 20,381 4.6 out of 5 stars 1,732 4.5 out of 5 stars 20,381 4.6 out of 5 stars 19,381 4.6 out of 5 stars 19,381 4.4 out of 5 stars 16,779 Price $199.97$199.97 $228.87$228.87 $149.87$149.87 $158.87$158.87 $119.87$119.87 $79.87$79.87 Size 55" x 28" 55" x 34.5" 48" x 24" 60" x 55" 55" x 24" 51" x 51" Design Solo L-Shaped Solo L-Shaped Solo L-Shaped