Mounts with screws to the front of the trailer and can be seen in mirrors. Large ball indicates side-to-side leveling, with second level for front-to-back. Lightweight plastic construction. Patented.

 PROP 65 WARNING: This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling. For more information, visit www.P65Warnings.ca.gov