These jags can be used to pierce the patch but also can be used as a wrap style jag. All male jags are 8-32 threads except 17 cal. and 20 cal. (5-40 threads) Available in male or female threads for most calibers. Female 22 cal. through 26 cal. jags fit Dewey 22 cal. rods only. 270 cal. jags and up fit 30 cal. Dewey rods only.
Sinclair, Issue:4A, Page:132