The Sliding Bimini Mounting Bracket is made in the USA and is only available in gray. It is made of a high impact composite material and is designed to be used on a 1-1/4” railing. This Bimini mounting bracket allows Bimini tops to be positioned and moved anywhere along the rail and can be used as a hinge for the Bimini Top Arms. This is a great replacement for Crest III and other manufacture’s brackets.