16Pcs Diamond Holesaw Set Holes Saw Drill

Bought these a year ago and haven't broke any while drill holes in tile yet.

no pilot drill included, size of bit not on the drill bit. Without the pilot drill, they are all but unusable.

I've used several sizes of these hole cutters. They've been great, have worked well on multiple holes, and have not shown any signs of wear. Great price point compared to the big box stores. Very, very happy with this set and would definitely buy again.