Bore Tech Shotgun Patch Jags provide 360 degrees of concentric pressure against the barrels surface resulting more patch contact, better cleaning and a perfect fit every time. This is accomplished by the 4 over-sized, flexible petals that compress when entering the bore, providing outward pressure which allows the patch to perfectly conform to the barrel surface. Incorporated into each of the 4 flexible petals are gripping rings which securely grab the patch preventing bunching.