A drill bit is an essential accessory for any drill, used for creating holes in various materials with a circular cutting motion that removes the material leaving you with a clean hole. It's important not to use a drill bit that exceeds the maximum drilling capacities of a drill as this could cause damage to the tool. Keeping the bit sharp is important to ensure less load on the tool and better cutting results. Available in various types and diameters depending on the type of material you are drilling or the size hole required.