The Samsung CLP-K660B high capacity toner cartridge delivers fast laser output with better cost savings. This high capacity CLP-K660B black Samsung toner cartridge is perfect for any busy office environment.Enjoy top performance, total reliability and impressive quality every time you print with this toner cartridge.. Duty Cycle: Approx. 5,500 pages . For use with CLX-6200FX, CLX-6210FX, CLX-6240FX, CLP-610ND & CLP-660NDThis original toner cartridge is ideal for use in the office.Please note that this item is delivered direct from our supplier and may take a little longer to arrive.