This Straight Groove Step Drill Bit Set is perfect for drilling into wood and metal. The titanium coating ensures a smooth and precise cut every time. The set includes three drill bits: 4-12, 3-12, and 4-20#2. The bits are designed to cut straight grooves and are suitable for a variety of materials.The bits are made of high-quality steel and are designed to last. The titanium coating provides extra protection against wear and tear. The set is easy to use and comes with a convenient storage case.This Straight Groove Step Drill Bit Set is perfect for DIY projects and professional use. It is reliable and will provide you with precise and accurate results. Get your set today and start drilling!