10pcs/pack Multifunctional Hole ter Tile Glass Porcelain Drilling Tapper Tool

Features: Material: Made of high speed steel(HSS) with nickel plated bit s tip head is 80-100 grit diamond coating good abrasion resistance high hardness and extreme high quality and long service life Smooth Hole: Small resistance center holes and side holes help to the waste easy to clean and accurate holes no broken edges 10 Size: 50mm/1.97inch 40mm/1.57inch 35mm/1.4inch 30mm/1.2inch 25mm/0.98inch 20mm/0.79inch 12mm/0.47inch 10mm/0.39inch 8mm/0.3inch 6mm/0.24inch diamond drill bit set with marked size easy to recognize Easy Use: Work with all electric drill and impact drill start diamond core drill bit use less pressure! Let your drill bit drill at it s own pace. Use plenty of lubrication/coolant to keep your drill tip cool and the hole clean Wide Application: Great for making your own glass crafts and projects wine bottles glass block sea glass tile porcelain ceramic China granite and more. Specification Material: High speed steel Color: Silver Size: About 50mm/1.97inch 40mm/1.57inch 35mm/1.4inch 30mm/1.2inch 25mm/0.98inch 20mm/0.79inch 12mm/0.47inch 10mm/0.39inch 8mm/0.3inch 6mm/0.24inch Package included: 10pcs x drilling tapper Note: Due to the light and screen difference the item s color may be slightly different from the pictures. Please allow 0.5-2cm differences due to manual measurement.