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.Thread Pattern: 5/16-27Type: JagSize: 12 GaQuantity: 1Length: 2.50"Material: NylonSuitable For: Shotguns