I bought the crimping tool for Amphenol type contacts. I don't believe this is the ... I bought the crimping tool for Amphenol type contacts. I don't believe this is the recommended tool, but it is far cheaper. It works fine but you have to take care to get your crimp perfectly round or it won't go into the connector. It may mean making a partial crimp and then turning it a couple of times, but once you get the hang of it it's no big deal. For me it was a good value