Tetra Gun ProSmith 36" .30 Cal. Rifle Rod Clean Barrels Quickly & Easily without Risk of Damage Premium Rifle Rod Made from stainless steel and DuPont TufCoat coated for maximum barrel protection. Tetra Gun ProSmith Rifle Rods effectively clean all firearms and are available in 29" and 36" lengths for .17 (5/32"), .22 (3/16") and .30 (1/4") caliber barrels, and a 44" length for .22 and .30 caliber barrels. Heat-treated stainless steel for maximum strength DuPont TufCoat coated Exclusive spinning Delrin handle Screw-on Delrin bushing & brass collar center rod in barrel to prevent scraping Fits standard accessories: .17 Cal. : 5-40 thread .22 - .30 Cal. : 8-32 thread