The metal of the antenna wall mount is galvanized iron with rust-resistant coating to prevent rust and corrosion for outdoor installation which are very heavy and well-formed. ^^ Heavy-duty Stand off wall mast mount clamps are made of 0.1 inch thick galvanized iron, strong enough to bear heavy antenna masts. The steel bars were very heavy and well-formed. With these mounts the attached antenna is absolutely stable with no sway. ^^ If you need to mount a large mast and antenna, this is the bracket you want to get. It's seriously heavy duty and will last forever.
This wall mount could support a long mast with a large antenna on top. ^^ Setup is pretty easy for wood siding with lag bolts. It also comes with expansion bolts for concrete.
^^ Kit includes: 1 pair(2-leg and 2-leg mount braces), including U-Bolt, V-Block Brackets, M8*60mm expansion bolts and lag bolts for reliable mount.