Silicon bronze
The colour is irrelevant , that just depends on the manufacturer. To cut through concrete you need a 'carbide tipped' drill bit. This tip is a little wider than the drill bit and is quite obvious.
The bit is called a countersink bit, but be sure if it's to be used in stainless that it is made from high speed steel (for metalwork) or carbide tipped and turned at a low speed. Use a good grade of cutting oil as a lubricant.
metal drill bit has a finer point
A titanium or cobalt drill bit.
Drill bits and screws are not the same and cannot be converted. vido produces drill bits with high quality, exported overseas and loved by the public. If you want to buy a drill, you can go to VIDO's official website to check.
The best type of drill bit for plexiglass is a carbide-tipped drill bit.
You need a diamond tipped drill bit to drill glass or tile.
The best type of drill bit for concrete is a carbide-tipped masonry bit.
An ordinary HSS drill bit can not cut through glass. A diamond tipped drill bit is necessary for this.
The most common type of drill bit is the 'straight shank steel twist drill' . Other less common but still much used bits are the Brad tipped bit for woodworking and the carbide tipped bit for masonry.
The best type of drill bit for ceramic tile is a carbide-tipped masonry bit.
For drilling into tile, use a carbide-tipped masonry drill bit.
A carbide tipped masonry bit would work well.
The best type of drill bit for granite is a diamond-tipped drill bit. Diamond is one of the hardest materials and can effectively drill through the tough surface of granite.
I use a brad tipped drill on oak and other hardwoods.
For drilling into a granite countertop, it is recommended to use a diamond-tipped drill bit. Diamond-tipped drill bits are specifically designed to cut through hard materials like granite effectively.
Use a dimond tipped drill bit or carbide tipped. Place some masking tape on the area to be drilled as this reduces the slipping of the bit as it breaks the surface of the glass. Dont apply to much pressure but allow the drill bit to do the work or youll get tear out on breaking through. A good hand drill will do the job.