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Picture	Titel	Update
	12 1/4" IADC637 rock bit for water drilling 12 1/4" IADC637 rock bit for water drilling1.The durability of premium tungsten carbide inserts are improved with new fo
	4 5/8" IADC637 water well tci rock bit with high rotary speed 1.The durability of premium tungsten carbide inserts are improved with new formulas and new techniques for insert bit;2.
	20" IADC537 metal drilling spade drill bit for media hard rock scrap tricone drill bits 1.The durability of premium tungsten carbide inserts are improved with new formulas and new techniques for insert bit;2.
	14 3/4" IADC437 TCI rock bits cutter for hole opener made in China 1.The durability of premium tungsten carbide inserts are improved with new formulas and new techniques for insert bit;2.

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