U-Bolt and Nest Assembly (CM9017)

What material is used to make the U-Bolt and Nest Assembly (CM9017)?
Heavy duty Chromate plated steel....
What is the largest diameter mast I can use with the U-Bolt and Nest Assembly (CM9017)?
Maximum mast size is 1.5 inch diameter...
What is the U-Bolt and Nest Assembly (CM9017) used for?
The U-Bolt and Nest Assembly (CM9017) is used to secure/attach/mount a TV antenna to a mast....