StealthMounts are the perfect way to store Festool 18V tool batteries, they work at any angle - upside down, sideways, under a shelf or on panel and are loved by trade pros around the world. They securely store the battery (clicks in) and give easy access to the power indicator (if applicable) too. The worlds first cordless tool battery mounting solution with over one million units sold around the world, you'll find these in the workshop and van of every serious tradesman, craftsman and engineer. The original and best mounting solution, period.