Pro-Shot Trace Eraser Jag .25 Caliber 6.5mm Model 25/6.5TEJ A jag draped with a patch completely covers the bore for a superior job of cleaning. For the perfect fit, use Pro-Shot 100% cotton flannel cleaning patches. All jags have #8/32 threads, except 17 Cal. and .20 Cal., which is 5-40 thread.