Ergo Elements Adjustable Height Standing Desk with Manual Hand Crank White Base, 4' by 30", Lava Stone Includes white hand crank base and desktop Height adjustment from 27" to 45". Length adjustment from 40" to 66" Ergo Element desk tabletops are predrilled and include all hardware to attach the desktop to the hand crank adjustable height desk frame Desktops are designed with cutting edge materials, built with industry leading manufacturing processes, & constructed with 100% recycled wood content Hand crank is removable which allows for optimal usable front work area USA WARRANTY & SERVICE: Ergo Elements is based in San Francisco, CA with full in-house customer service (M-F 9am-5pm PST). BUY IN CONFIDENCE.