HACKER SUBSTITUTES are machined from 4140/4145 alloy steel and heat treated to insure the maximum possible resistance to wear and fatigue and to impact and bending.
Available for use with all drill pipe and tubing sizes and styles, Hacker Substitutes may be ordered pin to pin, box to pin, box to box or in any box or pin arrangement. They are also available with any combination of
thread type or size.