Imaging drums are such an essential part of your printer, that it is literally impossible for Samsung laser printers to operate without products like the CLT-R809/SEE. This genuine Samsung R809 image drum regulates the flow of black, cyan,magenta and yellow toner powder, getting it where it needs to be, for fusing to your paper.With a high page yield of 50,000 prints, the original Samsung CLT-R809 drum unit rarely needs changing, but even the sturdy components the manufacturer uses, have their limits. You can use this fabulous SS689A drum unit in many different Samsung colour laser printers including the CLX-9301NA.