It looks like this Part has been superseded by LEGO Part 92013 Technic Brick Special 2 x 2 with Ball Receptacle Wide and Axle Hole.
Click on a colored part below to see the Sets and MOCs that use part 62712 Technic Brick Special 2 x 2 with Ball Receptacle Reinforced and Axle Hole in that color. You can find an overview of all LEGO Colors here.
If a color is missing, it probably needs to be added to a Set Inventory.
This part has been used by MOCs in the following colors but not officially released.