Every person who works in a workshop needs a tool like a drill. But which drill bit sets are good quality, durable and cheap? I would say that cobalt drill bit sets are a great choice. They can withstand high temperatures when drilled and last quite a long time. Here is a link to the top 4 cobalt drill bit sets and a short description of them. I recommend this blog, here is a lot of useful information for workshop workers https://best-workshop.com/top-4-the-best-cobalt-drill-bit-sets/.