I bought these because of the price and got 5 sizes. In hindsight, five sizes was close enough that I could have gotten by with three. What made me return it is the lack of quality. None of them slid smoothly down the sleeve. One got stuck and stuck. The socket was also the wrong size. As a result, I ordered genuine VIX bits made in the USA by SE Vick Tool Co. Bits instead of these fakes were much more expensive for 3 bits instead of 5, but the quality was top and everything worked perfectly. This is important because the pain of poor quality lasts much longer than the joy of a low price.