The reviews that these units are not suitable for hardwood were correct. They may be suitable for softwoods such as pine, but not oak frames.
Stainless Steel Bracket Shelves: Industrial Hanging Hardware
8 Review
πͺ Enhance Stability and Aesthetics with Alamic Corner Stainless Bracket Braces
9 Review
Stainless Steel π© Fastener Hardware by BIGTEDDY
9 Review
π§ Boeray Stainless Steel Straight Brackets Mending: Durable and Versatile Support Solution
8 Review