This 1/2-28 thread protector in black finish provides essential protection for your firearm's muzzle threads when not using a muzzle device.Thread Protector 1/2-28 ThreadingBlack anodized finishProtects muzzle threads from damageStandard 1/2-28 TPI threading for common calibersLightweight and durable constructionEssential accessory for maintaining thread integrity on rifles and pistols with 1/2-28 threading preventing damage when muzzle devices are not installed.