users.Equipped for performance Great Pdc Bits are equipped with:

1.high abrasion tungsten carbide material,hardened alloy steel base material

2.high perforamnce PDC Cuuters

3.carbide and diamond gauge protection

4.carbide/diamond shock studs

5.threaded or plain carbide nozzle for flushing

Place of Origin:	Hebei, China (Mainland)	Brand Name:	Great	Model Number:	GS1305ST
Type:	Center Drill Bit	Material:	AISI4145H	Use:	Well Drilling
certification:	API	size:	7-5/8" or as you need	IADC:	S433
Advantage:	impact resistance	connection:	3-1/2''API Reg	Process:	forging
Application:	oil,water and gas and mining well drilling	Formation:	medium to medium hard	Usage:	well drilling
market:	USA,Europe,Canada,Russia,Iran,African