"Peel and Stick" Drum Reset chips for Xerox Phaser 7400 OPC Drum 108R00647 108R00648 108R00649 108R00650 (Xerox Phaser 7400 7400DN 7400DT 7400DX 7400DXF Series) Just "Peel and Stick" to reset the drum code and save your time and  $$$ . This is a twin pack. Try our Quad Pack for super saving and even get an additional Transfer Belt Reset Chip as a bonus in the Quad Pack. Takes only 1-2 min. Comes with a full instruction manual. No Welding / No Soldering / No Firmware Hacking is Required. No tools is required. Just peel and stick. Use for : All color drum units on Xerox Phaser 7400 7400DN 7400DT 7400DX 7400DXF Youtube Video Clip : http://youtu.be/ZlSpMjOS6UI . Easiest ever installation of drum reset chips for Xerox Phaser 7400 models. Comes with new/improved instruction manual. Why change the drum units if they are not worn out. Extend their life one or two more cycle(s) with our peel and stick easy reset chips.