This has a variety of Bur bits and what really makes this a great set is it contains at least 4 of the major Bur bits that you need for setting tube, flush setting, etc… it also contains a variety of twisted drills sets. I would recommend this for my students… because it actually has one of every bur bit that you will need to do any type of stone setting. Plus there’s the extras. You get a 1.5 mm cup bur that’s very popular. There are some extra different bur bits that you can test out to see which one you like better. And also the extra different polishing wheels that you can try out as well, without having to spend a lot of money at one time. This is definitely perfect if you need as least one of each bur bits on a budget w/ extras.