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We are aware of your needs and knowing you are long for better glass drill bit for bottles! We hereby demonstrate our premium diamond drill bits for ceramic for you!Product Material?These diamond drill bits made of high-speed steel that is durable and have a long sevice life,which are high quality and good performance that excellent for making clean and accurate hole.Widely Applications:These diamond hole saw perfect for drilling glass, porcelain tile, fiberglass, granite, bottles, wood, blocks jars, ceramic marble, limestone and and other hard surfaces etc.15 Sizes IncludesBe Sure to Add to Cart!Package Includes:15 Pcs* glass drill bit for bottles