AFTERSHOCK Premium Cotton Patches are made of 100% cotton flannel and are available in various sizes to cater towards the most popular calibers. AFTERSHOCK Premium Cotton Patches should be used to free your firearm from any build-up. For peak results, we recommend pairing with Legend AFTERSHOCK CLP. This pack comes with 250 individual 2 1/4" square cotton patches ideal for the following calibers: .38CAL, 9MM, .44CAL, .45CAL, .410 BORE, 20 GAUGE.Features :"2 1/4" Patches"250 PackIdeal for the Following Calibers: .38 CAL, 9MM, .44 CAL, .45 CAL, .410 Bore, 20 Gauge