1/2″ X 28 Bull Barrel Thread protector. It is machined from stainless steel to very high quality standards on CNC lathes in my shop. It is counter bored to accommodate barrels that are not undercut at the shoulder. Smooth outside for a seamless look. Machined with care for a great fit and finish.
7/8″ wrench flats for easy installation and removal.
Length is .500″
Outside diameter is .930.
100% Made in the USA!