This is my take on the twist lock mechanism that is found on the bottom of the Milwaukee tumblers. I have added holes to accept M4 screws so multiple things can be designed and mounted to them like the packout style bin that is in the pictures. This is a very tight fit because after testing I realized anything longer than the mount itself applies to much leverage and doesn't provide a very secure fit. I have also added an arrow that goes through the entire print to help orientate anything that you would like to mount straight forward or backwards.