Pro-Shot cleaning jags are designed with a spear tip to keep the patch securely in place while cleaning. All jags are machined with male threads and are available in sizes from .17 caliber thru .50 caliber including pistol sizes. All jags are marked according to size. Machined from brass. Mfg: Pro Shot Products, Inc SPECS: Each jag is stamped with the appropriate caliber/mm for easy recognition. Standard American #8-32 thread.