This model can help you stack tables that have slightly different dimensions. This was created to help stack an IKEA Lack table with a cheaper amazon alternative which was smaller. Is it the best way to accomplish what I needed? Probably not. But it was cheaper than buying 50+ dollars worth of tables and waiting for the shipping. You can adjust the size of the overhang but I would not go extreme with these. Use your own discretion when it comes to how far out the overhang is.
The author hasn't provided the model origin yet.