Our all new disposable, eco-friendly Jet Black Battery Pen Machine Bags are now designed to fit both your batteries and pen machines together.  The uniquely designed adhesive strip at the top allows for easy sealing after inserting the pen machine and battery.  Enclose your machines quickly and easily, without ties or tape.  These bags are also designed with a 1 cm cartridge hole to maximize coverage, and for easy cartridge insertion without ripping the bag.