Cast aluminum pipe clamp with stainless steel spacer and bronze 2-way bolt pressure cable holder. For bonding aluminum compatible piping to copper cable. Fits up to 3 in. (7.6 cm) OD pipe. Cable holder can be turned 90 degrees. 5/16-18 stainless steel U-bolt, nuts, washers and separator. 4-1/4 x 4-1/2 in. (10.8 x 11.43 cm); approximately 9.9 oz. (281 g). Also available for aluminum cable to copper pipe configuration.