Review on 💎 DKIBBITH Diamond Granite Ceramics by Jeffery Pricinoc

These drills are ideal for working on heavy-duty porcelain stoneware. Traditional stone drill bits are not effective for drilling porcelain. I bought this set of 5 because the cheaper multi-size set I bought from another seller barely punched a hole. In this set I only used one drill bit to drill six holes and it still works. I've learned to use a bottle of water spray (or window cleaner) to keep the hole wet while drilling - just a spray every 10-20 seconds is enough.