Product description HEIGHT ADJUSTABLE TABLETOP - Adjust from 20.4" to 33" high and any height between with a manually and secure with the twist-lock knob for an ergonomic and personalized workspace. SMALL COMPUTER WORKSTATION - Solid tempered glass desktop (23.6" x 15.7") is designed to fit almost any size laptop or tablet with keyboard. MOBILE ROLLING DESK - Enjoy smooth-gliding mobility with four 1.5-inch caster swivel wheels (2 locking). Simply screw wheels in for a portable workspace that stays put when you need it. SOLID & STABLE DESIGN - Durable steel frame finished in white for long-term durability and easy-care. It's perfect for professional environments like offices, art and music studios, libraries, and in dentist's, optometrist's and doctor's offices. EASY ASSEMBLY - All tools required for assembly are included. Perfect for classrooms and teachers as a full-size, height-adjustable podium; or as an alternative to standard office and computer desks.