Review on SHDIATOOL Diamond Drill Bits Pack by Chris Lemm

The drill bit worked great to drill 2 very round holes in very hard tile. As other reviewers have suggested I glued it on and was happy with that because this thing has a habit of working as soon as you start. I started at an angle to get it working (had to re-tap a few times when things came off) and then straightened out once I had cut off the bottom edge of the hole. After going about three-quarters of an inch through the tiles and beyond, I made no further progress. Accelerated drilling and still going nowhere. Switched to a regular drill bit and it popped right through what I thought was drywall. I only needed a drill to drill both holes. My advice: a) measure twice, cut once; b) have a regular exercise on hand to go the last mile; c) drill at medium speed; and d) Duct tape is your friend.