Our Breakthrough Clean Technologies® Brass Patch Holders hold patches securely for application of Breakthrough Clean Technologies® solvents and lubricants. Fits .22 thru .45 caliber barrels. #8/32 thread for attachment to Breakthrough Clean Technologies® stainless steel rods and cables. Product Features • GUN CLEANING SUPPLIES: This high-quality tool fits .22 & .223 & .243 & .25 & .264 & .270 & .284 Cal & 5.56 & 6 & 6.5 & 7mm barrels & securely holds gun patches for applying solvents & lubricant