Ergo-Comfort Articulating Keyboard/Mouse Arm features Lift-n-Lock 6" height adjustment. Easy access tilt adjustment knob for 30 degree tilt range adjusts from a positive 15 degrees to negative 15 degrees for reverse angle. Keyboard/Mouse Arm offers full 360 degree rotation and smooth movement on a 21" precision glide track. Low profile mechanism provides maximum clearance for knees. Clear liftup Lexan mouse surface displays pictures, memos and more to personalize work space. Wide, ultra-thin platform provides sufficient keyboard and mouse surface for left-hand or right-hand use. Exclusive Therasoft wrist rest distributes weight to minimize pressure points while improving circulation. Meets BIFMA standards.