This cleaning kit works for DCP 240+ and DCP340+ as well as Non-Plus Models. The kit includes 5 self-adhesive rollers to be inserted into the printer, 1 print head cleaning pen, and 2 cleaning cards. Cleaning your printer routinely will help keep it functioning optimally. Residue can build up and hinder your printer's performance. The cleaning rollers will clean cards as they are fed to the print head to remove dust and other debris and protect the print head. The cleaning pen is used to clean the print head when the cleaning rollers just aren't cutting it. Lastly we have cleaning cards. These act as a general cleaning for you printer cleaning everywhere the card goes.