DARAY PIVOTR rail clamp for mounting DARAY medical examination lights onto a wall-mounted medical rail. It can be easily repositioned anywhere along the rail within seconds and provides a sturdy mounting choice for your light. Note: DARAY medical rail not supplied (see XRAIL). For the rail clamp for models X240/X340/MAG700 - see PIVOTRX. This product comes as the rail clamp only. Light-head and gooseneck not included. Product compatibility: X100 LED, X200 LED, X100 Halogen NOTE: If you already have a mobile version of the X100 and X200 lights, you will require a different PSU. Please order DRK4148. This is a compact plug-top type PSU. The PSU that comes with the mobile mount can remain in place ready to use with the light again when it's reattached.