MUIIGOOD 15 Pcs Diamond Drill Bits， Diamond Hole Saw Sets Extractor Remover Tools Hole Saws for Glass， Ceramics， Porcelain， Ceramic Tile，Marble Drill Bit 6-50mm[Product Information]- 1.High Quality: Nickel-plated with a diamond dust coating offers superior performance and cutting strength.High quality shaft and steel construction also makes for a longer lasting and high hardness tools set.
- 2.15 Sizes: 6mm， 8mm， 10mm， 12mm， 14mm， 16mm， 18mm， 20mm， 22mm， 25mm， 26mm， 28mm，30mm，40mm， 50 mm
- 3.Drill bit use skills:Reduced drill speeds(800-1000 per minute)，low drill pressure and increased use of water lubrication will greatly extend the life ot the drill bit.
- 4.Suitable for: wood， porcelain， glass， tile， ceramics， stone， masonry， granite ，marble and other hard surfaces.
- 5.Warning: Do not apply to concrete or depths over 1/2"; Water is required for lubrication when drilling，strictly prohibited from dry drilling!
