Works in the following bores: 0.22"/5.56mm: 22 Long Rifle, .222 Remington, .223 Remington, 5.56×45mm NATO, 5.45×39mm, 5.7×28mm 0.24"/6mm: .243 Winchester, 6mm Remington 0.25"/6.35mm: .25 ACP, 6.35×16mmSR 0.26"/6.5mm: 6.5×55mm, .260 Remington 0.27"/6.8mm: .270 Winchester, 6.8 SPC And other 0.22"/5.56mm to 0.27"/6.8mm sized bores. NOTE: This listing is for the NON WOVEN PATCHES only. All other items pictured are for reference purposes only. Warranty is only for manufacture defects. Patches are considered to be a consumable items, and are normally only good for ONE (1) cleaning.