What can I say about these mounts? You are wonderful. They fit perfectly in the battery compartment. It's not too tight and doesn't wobble. When a tool (pretty much any Ryobi tool) is placed on it, it's very secure and I'm not worried at all about it falling off, but it still slides in and out just fine. I bought 2 along with 3 battery holders that are sold separately. Pros: Holds a huge amount of tools. Brilliant design. Well designed. Comes in a very nice packaging. Mounting screws included and packaged in a nice company branded nylon bag Sturdy design for the way it was made - 3D printed (although I wouldn't call it home made, I wouldn't call it mass produced either) Cons: (so minor , it's hardly worth mentioning.) I can tell it's 3D printed. As above, for that it is really well designed and sturdy. But still 3D printing. In general I will buy more of these tools as my tool collection grows.