When I was building my deck was challenging without the proper tools. Corded tools with extension cords and 12 volt cordless tools was challenging. I built a 16x12 freestanding deck with 14 post holes at 3 feet deep. Corded tools. reach only so far and gets in the way. 12 volts tools are not powerful enough. Until friend brought over his Ryobi tool, what a difference. I borrowed his tools to finish my basement. What a difference and now I am buying starter kit.