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Rock drill tools

1)Thread type:T*5
2)Face design:flat face
3)normal and retrac
4) type:spherical/parabolic/connical/ballistic
5)diameter:*****7mm
6)use:mining,coal,iron,gold mine,tunnel,etc
tapered rock drill bits include:taper chisel bit,taper cross bit and taper bit
It's suitable for H*2mm and H*5mm taper rock drill rods use. It have three taper degree: 7°, *1°, *2°. It's widely used for hard rock(f=8~*8) drilling use.

em: shearwrenchcn at **3.com