[Single Pack] "Peel and Stick" Reset Chip for Samsung OPC Drum CLT-R406 CLT-R407 CLT-R409 (CLP 310 315 320 325 360 365 CLX 3170 3175 3180 3185FN 3185FW 3300 series Just "Peel and Stick" to reset the drum code and save your time and  $$$ . Try our twin pack(being sold on Amazon) for further savings. Takes only 1-2 min. Comes with a full instruction manual. No Welding / No Soldering / No Firmware Hacking is Required. Use for : CLP 310 / 315 / 320 / 325 / 360 / 365 Series including N and W models. Use for : CLX 3170 / 3175 / 3180 / 3185 / 3300 / 3305 Series including W, FN and FW models Installation videos are available on Youtube. The videos will show how easily, quickly and safely you can save time and money. Why change the drum unit if that is not worn out?  Youtube video clip for CLP 360/365 and CLX 3300 Series : http://www.youtube.com/watch?v=E77saSR5_EA&feature=youtu.be Youtube video clip for CLP 310/315/320/325 and CLX 3170/3175/3180/3185 Series : http://www.youtube.com/watch?v=PYYF5N9hlK4&feature=youtu.be