... bit, Kelly Box,Pilot box. 2.Road milling toolTungsten carbide cutting tools of Road milling bits/picks ,Round shank cutter chisel , ... carbide chain and wheel trenching bits ,Tool holders,Shank cutting tools and blocks,Lock rings,Retainer,Weld-on teeth. 4.Mining ... Round shank cutting tools and blocks,Cross bit ,Drag&Tri-cone bits,Chisel Bit,Surface mining bit,Underground mining bits,Coal mining teeth ...