Designed for mounting TV antennas/dishes on existing chimneys most commonly-used mount type on the market! ^^ A simple solution that gives homeowners of all kinds a safe and secure mount with ease. ^^ Accommodates Masts with 1.5 Outer Diameter (sold separately) ^^ Steel Straps add extra stability to the chimney mount that most other mounting configurations lack ^^ Includes (2) Y-Type brackets, (2) 18ft steel straps & bolts & clamps & the installation stpes are illustrated in the About section ^^ Zinc plated for weather resistance