This is my second purchase of UniqTools drills. I liked them so much that I bought a set for my boyfriend as a gift. He also uses them and is very happy with their performance. They are made from a durable alloy and their golden color really makes them stand out. I have tried these bits on various materials such as aluminum and wood and have had no problems. They are superior to the bits I have used before. The price is very reasonable and the product is fantastic. I recommend them with confidence.