A cast aluminum malleable base for use on sloped parapets and other pitched surfaces. Can be formed to contours. Has a 1-way bolt pressure cable holder. 5/16-18 stainless steel bolt and washer. 5-1/4 x 2 in. (13.3 x 5.1 cm); Approximately 5 oz. (142 g). Use suffix 1/2 or 5/8 inch to denote air terminal thread size.