Standing Desk Converter Riser Adjustable (Dual Monitors, Black) Extremely Stable - rock steady even at full 15+ height extension. Easily lift up to 35 lbs. in seconds, allowing you to stand up and sit down without breaking your concentration. Ideal for dual-monitor setups or larger workspace needs. A Silky-Smooth and Quiet Z-lift Mechanism with infinite stops - creating tremendous height range adjustability, fast and easy to move from sitting to standing height. Grabbing the main work surface on the left and right edges and squeezing the brake release paddles on both sides, moving the platform to the desired height, and letting go. Easy and quiet, no more annoying others in the same office. Arrives Fully Assembled Right out of the Box - no assembly, installation, or tools required! Keep your current desk but add ability to stand. Pull it out of the box, and it's ready to go! Easy to relocate to another office or desk. Super High-End Quality with Nice Gift Package - make it a great gift for you or anyone you love. Instead of traditional pizza box, your Smugdesk comes in a unique box with removable lid for gift packaging needs or for decorative household storage. 24 Months Warranty, 30 Days Money Back Guaranteed - make sure you spend your money with ZERO risk.