Review on 🔩 Enhanced Durability and Stability: Outside Joining Aluminum Profile Bracket by Srinivas Johnson

They're not symmetrical, but they're close enough that a lot of people won't notice. Meaning: If you flip a slab and line up the holes perfectly, the edges of the slabs will not line up. All 4 parts were made the same so that with care you can achieve uniformity. I didn't use metrology to confirm, but the bolt pattern looks consistent and evenly spaced.