6 Pieces Concrete Drill Bit Set Drill Tap Bits Set Efficient Hex Shank Tile Cross for Brick Wall Tile Granite Mirror

Description: HIGH QUALITY MATERIALS: Concrete Drill Bit Set is made of high quality carbide alloy. The process of oxynitride of the bit head strengthens the drill hardness. PRECISE DRILL: Full grinding and anti rust treatment clean and sharp without burrs. The drill bit is more wear resistant and more durable. FEATURES: Small incision resistance feature drilling stably fast speed not breaking the border. Opening neat smooth no broken edge chip easily. WIDE APPLICATION: Cross are suitable for glass ceramics tiles mirrors wood porcelain brick walls and more. Materials with high hardness need to be drilled while adding water. SIZE: 6 Different Sizes USABLE 4mm 5mm 6mm 8mm 10mm and 12mm suitable for your different needs. Size Chart: Total length: 75-78mm/2.95-3.07inch Working length: 48-52mm/1.89-2.05inch Hex Shank diameter 6.3mm/0.25inch Package Includes: 6 Note: Please allow slightly errors due to manual measurement and different monitors.