Kleen Bore Patch Holders Steel .22 to .45 Caliber Rifles and Handguns. 22-.45 Calibers ACC-10 are an ideal system for maintaining your rifle or pistol. The Kleen Bore .22 / .45 Patch Holder are made of high quality steel to ensure a durable and long lasting product. Kleen-Bore Cleaning Kits are ideal tools for the removal of powder and copper barrel fouling. Specifications for Kleen Bore ACC-10 Patch Holders for .22-.45 Steel Rifle/Handguns: Caliber: .22-.45 Type: Steel Features of Kleen Bore ACC-10 Patch Holders Steel Rifle/Handgun .22-.45 Calibers: Features straight (rather than crimped) wire bristles for more effective cleaning power. Packed in plastic tube. Package Contents: Kleen Bore ACC-10 Patch Holders Steel Rifle/Handgun .22-.45 Calibers KleenBore 1008852: Black Oxide Steel Patch Holder .22-.45 Caliber Handgun/Rifle