1) Certified by ISO9001&API
2) Fast drilling rate
3) Strong cutting structure durability
4) Different sizes are available
5) Cangzhou Great Drill Co., Ltd specializes in drill bits, tricone bits, pdc bits bit size range from 3 7/8"to 26", cover most of IADC codes.

Applicable	water well, oil field, construction, geothermal, directional boring, and underground foundation
Formation	Sticky, soft, medium, medium-hard, hard formation
Bearing	Rubber seal or metal seal
Packing	Wooden box, steel box or as your required
Payment	T/T, L/C
MOQ	One piece
Supply Ability	500 pieces/month
Delivery Time	According to the amount of your requirement