ISO tungsten carbide drill bit/chisel bit /button bit/drilling cross bit

the featured about chisel bit:

The chisel drill bit is made from grade hard alloy and special steel, and generally matched with the light-duty rock drill, to drill the rock hole within diameter of 50mm.

It is widely used in metallurgy mine, geological exploration, water conservancy construction, electricity, traffic, tunnel, quarry, national defence stone project etc.
specifications available:

Notes:Non-standard also can be available as your points.