The .17 Caliber Cleaning Jag is designed for precision firearm maintenance with an integrated O-ring system for secure patch attachment and effective bore cleaning..17 Caliber Cleaning Jag (Model J17RP)O-ring design for reliable patch retentionPrecision-engineered for .17 caliber firearmsUPC: 689466565706Essential for maintaining accuracy and performance of .17 caliber rifles and firearms ensuring thorough bore cleaning with secure patch attachment.