Hex tool to use with popular baby gates. This tool is a must have for any parent that uses the plastic baby gates with hexagon screws. We bought one of these baby gates and it didn't come with any kind of tool, so we were trying to hand tighten the screws and got so frustrated because the screws are so close together it is hard to grip them to tighten. There are multiple brands that use the same hexagon screw design so the hex tool should work with most gates.