AFR036 Dry Diamond Drill Bits Set for Granite Ceramic Marble Tile Stone Glass Hard Material Hex Shank Masonry Hole Saw Bit 5-16mm AFR036

Using Steps: Step 1: Start Drilling the hole in an angle about 45 degrees to the surface, so the drill has the chance to start and will avoidance the drill slipping Step 2: Slowly move the drill bit into a more up-right position and wobble the drill bit in the circular motion Step 3: Do not need to apply much pressure, let the drill bit do the work, you will feel the drill bit break through the back of the glass or tile once the hole is completed Step 4: Take care when using them as a bit can glaze and burn out if use too fast Recommended Masonry/Stone: Ceramic Tile, Porcelain Tile, Common Glass, Ceramic, Marble, Granite, Microlite, Quartz Stone Not Recommended: Stalinite, Metal, Wood, Plastic

• Multi-purpose drilling for granite & marble masonry concrete, tile/ceramic, stone；Wax inside for cooling,our Diamond Tipped Drill Bits have wax cores built-in which automatically absorb and dissipate heat as you go；Dry drilling and Use water for longer time.Notice:Please use with water when drilling granite
• Vacuum Brazed diamond technology provide very high efficiency,cuts faster and lasts longer
• Size: 3/16" (5mm), 1/4" (6mm), 5/16" (8mm) , 3/8" (10mm),1/2" (12mm), 9/16"(14mm), 5/8"(16mm)；Lengthen:65mm
• Bit type: Vacuum Brazed Diamond tips；Drill type: Both Dry and wet；Shank Type: 1/4" (6.35mm) Hex Shank
• Packing included: 1/5/7pcs (Dry Diamond Drill Bits)