Tapered drilling tools(Tapered Drill Steel)

Including:

Drill rods with Shank H22x108mm,(6,7,11,12 degree taper) taper rods in most lengths.

button bits, cross type bits and chisel bits with(6,7,11,12 degree taper).

Bit diameter:28mm-57mm.

3.Extension drilling tools

Button bit, face design :Flat face, drop centre, Normal and retrac body.

tungsten carbide(Buttons):Spherical, ballistic and Conical.(Threaded  R32, T38, T45,T51, bit diametre:45mm-127mm);