12Pcs diamond drill bits glass tile hole saw bits set, hollow core drill bits, extractor remover hole saws for glass, ceramics, State of the Art Design: These diamond drill bits are the perfect addition to your took kit The unique circular design removes clean circles, and the side holes discharge slugs automatically for maximum efficiency Better yet, the shank prevents slipping and holds the bit securely in place12-in-1 Powerful Diamond Dust Hole Saw: Take your drilling to the next level Thanks to the luxurious diamond dust, these high-quality bits take will provide an unbeatable drilling performance for years on end Extremely Versatile Hole Saw Set: If you can dream it, you can do it Diamond Drill Bits will remove a perfect circle from glass, tile, marble, granite, ceramic, and more The Perfect Size for Every Project: Each hole saw kit includes 12 different sizes ranging from 4mm- 50mm in diameter Drill small holes, large holes, or something in between You'll have perfect size for each and every circle User Friendly: These bits are great for amateurs and professionals alike Drill diagonally to score your hole, and then hold the drill at a 90 Degree angle to bore through the material You'll be done in no time flat A Must-have Hole Saw Kit for Glass Processing, Interior Decoration, or DIY Projects AlikeIngenious Design Makes Drilling a BreezeEach drill bit comes with a shank that holds the bit in place without slipping You'll be able to drill clean holes effortlessly Two side holes on the bits allow for easy slug removal to increase drilling accuracy and efficiency Obnoxious debris will be removed automatically so that the bits last as long as possible Notes:1 These bits are not suitable for drilling concrete or materials that are thicker than 0 5 inch 2 To prolong the life of the bits, lower drilling speed and wet the surface with water for added lubrication Material: steelColor: SilverSpecial Feature: Always use water for lubricationPackage Content12x Hole SawOnly the above package content, other products are not included Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing The measurement allowed error is +/- 1-3cm