Twist drills are the most common types of drill bits. A twist drill has a cylindrical shape with deep helical grooves running lengthwise across its body. It is made up of three major components: the shank, the body, and the drill point.
Drill bits can become dull over time due to extreme heat from drilling holes on rigid surfaces and due to improper use. Friction and extreme heat can wear down the bit's critical cutting edges, making drilling jobs more difficult and time-consuming.