Amphenol AT connectors are compatible with Deutsch DT connectors. These are a great way to create connectors that are durable and sealed.
Project kits include all parts needed to make both ends of one 4 wire connector, everything in main photo above - Plugs, receptacle, wedges, and contacts. For use with 16-20 gauge wires. Use open barrel crimping tool like 5000F to crimp contacts.