The product description doesn't mention anything about painting the brackets. However, customers generally agree that the brackets are durable and strong.
The product description states these are made from carbon steel plates with black powder coating which helps shield them from rain and enhance durability.
I used a 5/16” bit to get the depth and then a 3/8” hammer drill bit to round it out enough for the bolt and wedge to be pounded down.
It worked perfectly.
