Drills/Drivers are the most common tool purchased. Available in a variety of sizes and voltages, anyone from the DIYourselfer to the professional can find a decent, affordable drill/driver. Features to look for when purchasing a drill/driver include: voltage needed for your work, built-in light, weight and balance of the tool, bit storage on drill, easy bit changing and a storage case. Optional accessories for the drill/driver include: various types of drilling bits.