The battery holder fits the Milwaukee M18 18V battery perfectly and is very easy to use. It's ideal for hanging batteries neatly on the wall or under a shelf. The batteries are snapped into place using the existing locking mechanism, which holds them securely and makes them easy to remove with a single click of the release button. Once secured in the docking station, the battery won't fall out, even while driving. These battery organizers are specially designed for use in the workshop, under shelves, or for mounting in the toolbox in a pickup truck bed. Matched to the color of your tools, they ensure perfect battery placement. You can customize the battery type and position it to suit your needs. Made of robust and extremely durable ABS plastic. The battery bracket features countersunk screw holes that can be installed at any angle, upside down or under the shelf. 10 brackets, 20 screws.