The CO2 pressure regulator for my kegerator was very difficult to adjust. It required a screw driver, a good memory, and two very steady hands. This part fixes all those problems. It slides snugly into place, engages the slot of the adjustment screw, and is secured by the hex nut (already on the regulator). Now, it is easy to adjust the pressure with one hand and it is easy to remember the location of the position indicator. Print using .2mm layer height and 10% infill. Fill the triangular position indicator with white finger nail polish (or color of your choice). Align the groove of the screw head with the ridge located in the dial's cavity and press the dial onto the screw head. Slide the dial so the screw head is in the center. Secure in place with the hex nut (if desired - it's pretty snug without doing that).