8 1/2 inch IADC617 Single roller drill bit used for drilling bridge piles and fl

US $280 / pc

Min. Order: 1 pc

Hard Rock PDC cone bit Used for drill underground core

US $150 / Piece

Min. Order: 1 Piece

Tricone rock drill head bit used water well with high wear resistance cutters

6 3/4 IADC517 metal sealed petroleum used tci tricone drill bit

US $200 / pc

Min. Order: 10 pc

SMSCC tungsten carbide square bits in Coal Mining Use