Mounts a Stix light to the or DIN standard reflector mount found on nearly every rack out there, including the Specialized Pizza Rack. If you are running a bag on top of your rear rack, a taillight mounted on your seatpost can be totally obscured to motorists behind you. The Stix Reflector/Rack Mount is an ingenious way to get maximum visibility when running a rear rack bag. Includes all mounting hardware. Mounts Stix light horizontally. Specialized single hole pattern for the Pizza Rack. This mount can attach in the following ways: This mount can attach to the Horizontal Din hole pattern. Vertical hole pattern.