Diamond hole saw drill bit set

🛠️【Widely Work】 :Diamond drill bits cut smooth circle from ceramic, tiles,marble,granite,glass,porcelain tile or other.Diamond hole saw are perfect for drill countertop,mirror, pots,tile, bottles,blocks jars,ect.
🛠️【Sharp & Durable】:The diamond tip drill bit are made of industrial grade carbon steel with nickel-plated coated body to resist corrosion. A thicken diamond coating to achieve cut smooth,durable and strength