Dry Diamond Drill Bit Set, 8pcs 1/4" 6mm Hole Saw for Granite,Marble,Masonry, Concrete, Tile/Ceramic, Glass, Hard Plastic,Vacuum Brazed Diamond Core Drill Bit Kit

●Diameter 6mm 1/4 Inch,diamond length 8mm,Round shank

●Multi-purpose drilling for granite & marble, masonry, concrete, tile/ceramic, glass, hard plastic,All-Purpose Drilling

●Wax inside for cooling,our Diamond Tipped Drill Bits have wax cores built-in for Cooling and Lubrication.Special Designed with Hole and Groove in the Side of Drill Bit for Removing Stone Chips

●Dry drilling without water,Use water for longer time

●Vacuum Brazed diamond technology provide very high efficiency,cuts faster,durable and sturdy

Sizes: 0.8mm 0.9mm 1.0mm 1.1mm 1.2mm 1.3mm 1.4mm 1.5mm

FAQ

Question:

Will theses bits skip when you start them

Answer:

Yes the drillbits will skip if you start at a 90° angle into the tile. What do you need to do is put the drill on about a 45° angle to get started and tilt it up once you make an indentation. Medium speed

Question:

If my screw is 1/8 inch (3 mm) wide, and I am going to use a plastic wall anchor, what size drill bit do you recommend?

Answer:

I would suggest 1/4"..

Question:

What is the overall length of the bit?

Answer:

The overall length of the bit is 2-1/2"

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