This 4 pack compatible Samsung CLT-407S Series (K407S, C407S, M407S, Y407S) replacement toner cartridges are for use in the following printers: Samsung CLP-320, CLP-320N, CLP-321N, CLP-325, CLP-325W, CLP-326, CLX-3180, CLX-3185FW, CLX-3185N, CLX-3186. Our laser toner cartridges are professionally manufactured to produce the best quality prints for your Samsung. All of our replacement cartridges have new internal parts including OPC drums, a new smart chip, and wiper blades. Our replacement cartridges offer an excellent choice over expensive brand name toner cartridges for your printer. All of our cartridges come with a 100% Satisfaction Guarantee!