Tetra Universal Shotgun Cleaning Rod is also suitable for black powder firearms. Heat treated stainless steel for maximum strength, DuPont TufCoat coated with a screw on Delrin bushing & brass collar center rod in barrel to prevent scraping. The spinning Delrin handle cleans Barrels quickly & easily without risk of damage. Fits standard accessories. Also, can be used for black powder firearms. 5/16-27" brass adapter included.