Does your work entail making many holes of varying diameters? Then, you need a versatile drill bit such as the multi-step drill bit. These are special drill bits
designed to help the user drill holes of varying sizes using the same bit. They are used for drilling holes in different materials such as metal, wood and plastic. When you start drilling, every step of the multi-step drill bit helps to make larger holes. Therefore, it is important to know when you have reached the preferred depth and stop drilling. Multi-step drill bits for drilling holes in workpieces of standard hardness are made with materials such as high-carbon steel. However, drill bits used for making holes in very hard surfaces are made of high-speed steel. Some also have an additional coating of titanium nitride coating to make them harder. Therefore, it is important to know the hardness of your workpiece on order to purchase the right multi-step drill bits.