I recently bought a new drill bit for my Industrial and Scientific work, and I regret it .Thanks to my knowledge gained in practice, I can tell you that this product is not worth the money. The only positive thing i could say is that it did have a decent length for jobber work. however, it was not durable and broke after only a few uses, making it a complete waste of my money. I would suggest not buying this product and investing in a higher quality drill bit instead..