The .17 & .20 Cal. Bore Mops are made from all cotton material and are designed for cleaning .177 caliber airguns, .17 caliber rimfires and centerfires, as well as .204 Ruger and .20 caliber wildcats.
These bore mops feature a twisted brass wire core with a closed-loop end, brass threads, and ferrule for durability and easy attachment to cleaning rods.
Specifically compatible with Dewey and Outers small caliber rods, the mops have a 2½" (6.3cm) length and a 5-40 male thread for a secure fit.