EQ Acoustics Corner Bracket Wall

I bought these for the EQ Acoustics corner bass traps. First of all the length of the cross bars doesn't match the corner bass traps, so you have to cut each of the 4 bars to lenght. All items had pre-drilled pilot holes that were seemingly drilled at random. No consistency between items and they were all useless for assembly. I had to drill new holes and would have preferred the product shipped with no pilot holes so I didn't waste time trying to make the pre-existing ones fit. The items are plastic (not sturdy metal like the similar ceiling brackets). Each set of brackets for one trap require 8 holes to be drilled in the wall, which seems excessive, as the bass traps themselves are held up with velcro in the end. Once the traps are installed they look decent though.