Montana X-Treme?s unique ?Patch Grabber? design helps guarantee that patches stay put during vigorous cleaning. Opposing barbs grip the patch securely allowing both pushing and pulling strokes over heavily fouled areas of the bore. CNC-machined from solid brass our jags also feature a radius-cut reinforced tip to resist bending and breakage. Each jag is laser engraved for easy caliber identification. Standard 8 X 32 thread.