Thanks to my knowledge gained in practice, I can confidently say that these titanium coated drill bits are an excellent purchase for anyone looking to tackle industrial and scientific projects .The bits are tough and work well with various materials, including metals, wood, and plastics. Additionally the coating prolongs the BIT'S life by preventing wear and tear from friction. The only drawback I've encountered is that the set doesn't come with a storage case, but that's a small issue compared to the quality of these bits. Overall, a great buy!