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 caliber and 20 caliber (5-40 threads) Available in male or female threads for most calibers. Female 22 caliber through 26 caliber jags fit Dewey 22 caliber rods only. 270 caliber jags and up fit 30 caliber Dewey rods only.
Sinclair, Issue:5B, Page:132