A cast aluminum base with 2-way bolt pressure cable holder. Cap can be rotated 90 degrees. Suitable for use on built-up, single membrane, or other roof surfaces where mechanical penetrations must be avoided. For use with adhesives compatible to roof surface. 5/16-18 stainless steel bolt and washer. 4-1/4 x 4 in. (10.8 x 10.2 cm); Approximately 6 oz. (170 g). Use suffix 1/2 or 5/8 inch to denote air terminal thread size.