Hicon HI-J35S02 Mini Jack Plug

This is a good looking and sturdy connector, but it's a huge pain to solder to. There are no tabs or cups for the tip & ring connections, they are just concentric rods nested inside each other. I suggest pre-tinning everything and making the connection by reflowing with some extra flux. The ring connection and the housing (sleeve) are so close together that even with a pencil tip on the iron it's way too easy to bridge them together. But if you're feeling confident, go for it. FYI, a pair of SC Onyx 2025 cable does just fit into the strain relief if you lubricate the inside (with silicone grase / talcum powder) and play with it a little bit.