This tool is simple perfection - it does exactly what I need without complication. Drill a pilot and countersink, flip and drive the screw. The drill bit can be ajusted for depth or removed and replaced. The allen wrench needed to adjust or change the bit is actually built into the butt end of the housing. You might consider finding a kit that includes multiple different countersinks, as they are rather expensive to purchase individually. This exact same tool has been sold under many different brands.... more info
