Shakespeare Antenna Swivel Mount KitThe Shakespeare Antenna Swivel Mount Kit consists of Shakespeare's swivel mount and a molded upper bracket. The bracket features an insert to accept 1" or 1-1/2" diameter antennas or extension masts. The dual swivel mount permits mounting on vertical or horizontal surfaces.Features: Swivel mount is stainless steel construction; Includes a 1-1/8" insert; Standard 1"-14 thread (male);