In/Outboard Rail Grill Mount. Ideal for using your Kuuma grill aboard your boat by mounting it on any cockpit rail. Can be used on 7/8"-1-1/4" round horizontal railings or 1-1/4" square railings. This mount allows your grill to hang outside the rail to protect fiberglass from spills and splatters.WARNING: This product can expose you to chemicals including LEAD which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.