Stop cylinder head used for full arches and horizontal dies. Not used for Quadrant VSP. Lateral cuspid rise of 53 degrees which can be reduced for flatter occlusion. Stop is easily repositioned in the event the bite must be changed. Stops can be placed at any location to obtain tripod stability on free-end posterior and anterior cases. 360 degree excursive flex. Rigid vertical axis. Solid centric location. Note: Monotracs and Full VSPs require both Stop Head and cylinder Head parts. Use cylinder head with stop head for free-end Monotrac articulator and Full arch VSP set ups.