[B4H1 SNGL] Super Easy Drum Reset Chip for OKI 44574301 Drum unit. Compatible for B411, B411d, B431, B431d, MB461, MB471, MB491 (Single Pack)[B4H1 SNGL] Super Easy Drum Reset Chip for OKI 44574301 Drum unit. Compatible for B411, B411d, B431, B431d, MB461, MB471, MB491 (Single Pack) Your time and health is worth more than little bit of cost. As easy as using a sticker and save your time and  $$$ 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 OKI Drum unit 44574301. Printer list OKI B411 / B411d / B431 / B431d / MB461 / MB471 / MB491 Youtube Video Clip : https://www.youtube.com/watch?v=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.