Standard:		API SPEC 7 & NS-1
Material:		4145H, 4145H Mod, Non Magnetic
Type:		Slick Drill Collar, Spiral Drill Collar, Flex Collar,
		Non magnetic Drill Collar
Size:		3 1/8" - 14" in various lengths
Hardbanding:		ANRCO 100 XT, 200XT, 300XT.