A simple yet super useful little bracket with a lot of strength.
Works perfectly for reinforcing corner joints
in wooden structures such as shelving units, boxes, and whatever has 90 degree corners that can hold screws or bolts.

I use these a lot for DIY
because they work just as well as the metal ones from the hardware store
at a fraction of the cost.
 

If you use two of these to mount your pet elephant's bed along with your anvil collection to your drywall and it breaks, don't blame it on me.
The designer assumes no liability for property damage or injury resulting from the use or failure of this 3D-printed part. Always over-engineer your safety margins.