This is a Gridfinity storage bin for the DDrum Chrome Elite (CE) Triggers. The pegs are a very tight fit, but they are also 1mm shorter than the holes they fit into to make sure the two main pieces sit flush against each other. Because of my printer's tolerances, I did not need any glue for this. It's a 6x6 (as you can see in the pictures) once assembled, and a 3x6 when printing. Unfortunately, due to the size, this will not print on an A1 Mini.