1.manufacturer of diamond pdc drill bit
2.design and produce as customer request
3.replaceable nozzle
4.cover all size
5.API&ISO9001 certificated
6.high quality with best price is our advantage for long term cooperation
7.good after-sales services
8.have gained high reputation in America and middle east

***Please specify the following on enquiry***
Diameter
Bit body
IADC code
Number of blades
Main Cutter size
Thread Connection
Drilling formation 
Thanks a lot!  You are welcome to our company to visit.