I bought these because they were the size I used the most and by the way they broke the most. Not wanting to buy another set of drill bits that I rarely use, this 12-bit set is an absolute steal. What's even better, they're incredibly durable too. I've used this for pre-drilling prior to countersinking trim nails and still haven't snapped 100 holes later! This is my first time using Champion brand drills and I will definitely use them again. They knock the pants out of my more expensive Bosch bits.