Proof-Positive Bore Stix are Bore Tech's top-of-the-line premium coated cleaning rods. It features color-coded, comfort grip, ball bearing handles, and a caliber specific enhanced steel core that minimizes the bow and flex in cleaning rods. It also has a unique index dot system that allows for easy determination of a firearm's rifle twist rate. The ball bearing handle allows for effortless motion and precise following of the barrel's rifling. This rod is 36 and has a orange handle. For rod overall length (OAL), add 5.5 to the rod's Working Length. All rod lengths listed are the Working Length of the rod. These measurements Do Not include the length of the handle. It is compatible with 22 cal rimfire. The 22 RF rod is approximately 0.015 smaller in diameter to help clear ejectors and choked barrels frequently found in rimfire rifles. Yes, you can use the 22 RF rod on a 22 CF rifle without any issues. Do not use 22 Centerfire rods in Rimfire rifles.