Very good quality and efficient drill bits at a great price. The drill bits are made from high quality durable metal and are great for light drilling in wood (I haven't tried more). The tip of the shovel is threaded, making it easier to start a hole. In addition, there are spurs on the top of the blade that appear to help create smoother, cleaner holes. In my experience, these drill bits are a great way to quickly and effortlessly drill holes in finished or unfinished wood.