Millennium Keyboard Mechanism by Kiika.

Mechanism Description: Lift and Lock rachet height adjustable mechanism. Height adjusts 6¼" up or down. Tilt adjusts +/- 15 degrees with Soft Touch knob. 360 degree rear swivel. 23" and 17" track glides.

Platform Options: Many configurations available to fit furniture design and user preference. Single platforms accommodate both keyboard and mouse. Two piece configuration has separate keyboard and mouse surfaces. Mouse platforms can be independently adjusted. Also available are platforms designed for contoured keyboards and radiused worksurfaces. Palm rests are available in fabric, vinyl, rubber or gel.

Price range: $144 to $177*

Geometray .
Description: The Geometray is used to create a corner worksurface from two rectangular ones. Available as 18"D x 22"W rectangle or 12"D x 22"W curved metal plate that accommodates worksurfaces of 1¼", 1½" and 2" thicknesses.
Price range: $48 to $65*

Positionmate by Viking.
Description: Mechanism mounts under the worksurface. Has a 12¾" travel range and a tilt adjustment of +9º to -15º.
Options: Available in standard and custom laminates in widths from 24" to 60".
Price range: $238.55 - mechanism only. Call for pricing on platforms.*

*Price varies depending on options. Excludes shipping, applicable sales tax or quantity discounts.