Using your tools will require replacement from time to time due to wear and tear. Especially with drills. In my case I had to buy a new set to replace two of the four broken hex bits. See photos. The whole set was inexpensive and that means a lot of drilling or just hard to drill into anything but softwood. I have a drill bit for an impact driver but the 13 piece set ensures all my needs are met. I compared it to a smaller set I gave to one of my family members. The build is very similar, the material looks the same and I tested it on a thin piece of metal. Both worked. I've even tried comparing how the bit fits into the bottom of the hex shank but to be honest I've never had a shank break on many of the bits I have and use. They are durable and definitely value for money given the full range for the ΒΌ" shank.