So sorry for laughing AnjL!!! But there are so many dremel bits that look just like each other!! Did DH at least keep each drill bit in it's original packaging?? If not, tomorrow I will bring out my kit and see if there is a number or letter or something on the side of the bit to help. I will tell you that I had the hardest time changing bits! I had to have my brother help me loosen and tighten the bits. I'll get back with you tomorrow. In the meantime.....STEP AWAY FROM THE DREMEL!!!!