Kirkland detergent adapter for laundry soap holder

I recommend printing this instead: https://www.thingiverse.com/thing:2783459

Simple Kirkland brand detergent adapter for Laundry Detergent Cup Drain by davwilso https://www.thingiverse.com/thing:2748680

I recommend an o-ring or rubber band between the drain and the adapter in order to create a good seal.