That connector appears to use what’s known as an “open barrel” crimp style, which is extremely common and can be applied using a variety of tooling products. It’s not uncommon for manufacturers producing contacts using this crimp style to avoid specifying any one particular tool, since there are a great variety of them which can work, and the quality of the end result is as much a function of the operator/process as the tool itself. A number of resources describing the desired end result are available here and here, with other resources linked therefrom.
One’s choice of tool will depend on use context, but for non-production purposes the three linked here are inexpensive general-purpose options that allow a person to do a reasonable job of crimping open-barrel contacts of various sizes.