This design is for a support/holder. I like the brass dollar store bins for my bathroom (even if they rust too quickly), but I wanted to stack them and save counter space. This design is for a corner column/support/holder that hooks onto the bottom brass bin. With four of these support columns in place, the top brass bin sits nicely on the top, fitting into the grooves in the top of the column. The "pins" that are included here slide down into the holes in each column, 2 pins per column, to stabilize the column.