Select from single-point tools, such as turning and boring tools, or multi-point tools, like end mills and drill bits.
Center drills are short, thick bits used to start a hole prior to drilling. They have pilot tips that create an indentation or small-diameter hole in the workpiece to prepare it for drilling. This helps the twist bit to avoid walking and wandering off center when drilling. Center drill sets offer the convenience of varying bit sizes in one assortment.