It is becoming increasingly difficult to find individual small drills made of suitable material such as M2 HSS or M3 High Cobalt. Most drill bits you buy at this price are carbon steel or an "alloy" that is only slightly better than carbon steel. Cobalt and Genuing HSS drills stay sharp longer and drill better in hard metals. I'm still looking for good quality small replacement drill bits like 1/16-3/16 that break often. It used to be easy to find a pack of 4 or 6 HSS or Cobalt 5/64, 7/64. 32.3. etc so I had to buy this set which has 2-3 large bits that don't break often. It gets to the point where you can no longer get what you want.