Review on 💎 Efficient Uxcell A13111800Ux1403 Diamond Drill for Granite - Unleash the Power of Precision Drilling! by Joz Lowe

They are very thin and they work but you need to know how to use them. You need to keep them cool and moist. I use a spray gun and run the drill with one hand and constantly spray the drill/hole. do not push too hard and do not perform the exercise too quickly. Be patient. Especially with porcelain stoneware. I bought them to install handrails in a porcelain stoneware shower. Drilled 10 holes and used 6 bits. I used to buy a $20 bit that ran out after about 10-15 holes. such a cheaper option and all the reason to pack them by the dozen