These 13 Solid Brass Cleaning Jags are the fastest way to thoroughly clean, dry or oil your barrel. Each jag is designed to provide a tight fit between the patch and the bore. A pointed tip keeps the patch centered and allows it to drop off when the jag exits the muzzle. Made with 8 x 32 threads (17 Caliber has 5 x 40 threads), they will fit most popular cleaning rods. This set includes solid brass jags in a compact hard plastic storage case.Thread: 8/32" for all but .17 caliber, which has 5/40" threadsSet contains 13 jags, which will fit the following calibers: a 17 Caliber (5-40 threads)a 338 / 8mm Calibera 20 Caliber (5-40 threads)a 35 / 9mm Calibera 22 Calibera 375 Calibera 243 / 6mm Calibera 40 / 416 Calibera 25 / 6.5mm Calibera 44 Calibera 270 / 7mm Calibera 45 Caliber #239013a 30 / 32 CaliberNotes: Will not fit Outers rods Includes Injection Molded Plastic Case