These are 4 NEW Heavy Duty Black Steel 6" x 8" Counter Top Support Brackets
These heavy-duty brackets features a low-profile plate installation giving your kitchen countertop a clean "floating" look
Brackets are pre-drilled for easy installation
They work well in supporting counter tops and many other applications
Note that the 8" side is designed to go under the counter, so your overhang should be between 8.5" & 12"