Tetra's Prosmith Brass Jags are essential for any serious cleaning routine, offering maximum cleaning power and versatility. Designed with close tolerance fit, these jags ensure a perfect bore seal and fit for thorough maintenance. The industry-standard 8-32 male thread (5-40 for .17 Cal. and .204 Cal.) and 5/16-27 male thread (12, 20 Gauge) make them compatible with various calibers. Each jag is meticulously machined from high-quality brass, promising excellent durability and reliable performance. Whether you're a novice or an experienced enthusiast, these jags will enhance your cleaning process and help maintain the integrity of your equipment. Compatible with all ProSmith cleaning rods, they are the ideal choice for achieving meticulous, professional results every time.