This BLACK+DECKER MATRIX 20V MAX 8-Tool Combo Kit is great for DIY projects around the home. Decorate repair and even inflate tires + toys using this combo kit. The compact system can be neatly stored away in its MATRIX storage case. The MATRIX Quick Connect System is a part of the BLACK+DECKER 20V MAX POWERCONNECT BATTERY SYSTEM which allows you to use one battery for multiple different tools.