KIRKLAND External Ring Clamp
The 6" Kirkland External Ring Clamp, is made of cast aluminum for years of service. Using the thumbscrew to open and close, this clamp holds a ring externally which allows the user to file, grind or polish the inside of the ring band. Jaws are lined with thick leather and slightly concave so they will not scratch gold, silver or other precious metals. 25mm maximum opening. Made in the USA.