KegWorks Flush Flat End Cap - Polished Brass - For 1.5" Outside Diameter Bar Foot Rail Tubing Made of polished brass. For use with 1.5" outside diameter bar rail tubes. Eliminates rough edges and provides a finished look for your bar rail. Dimensions: 1 1/2"W x 1 1/2"H x 1"D. Installed Dimensions: 1 1/2"W x 1 1/2"H x 1/8"D.