3M Knob Adjust Keyboard Tray with Standard Platform

All-in-one keyboard platform with 5-1/2" height range, 360° swivel and +15°/-15° tilt. Easy height and tilt adjustment just loosen knob, position tray as desired, then re-tighten knob. Mousing surface can be positioned right or left. Full-width leatherette gel wrist rest with antimicrobial product protection. Precise&trade mousing surface extends battery life. Color: Black Workstation Type: Straight Height (+/- Desktop): +1"/-4 1/2" Keyboard Tray Dimensions (W x D): 25 1/5" x 12".Unit of Measure : Each