Review on High Quality 8Pcs 4mm Gold-Plated Banana Plug Male Connectors for Test Leads and Speaker Wire Cables: Ideal for Multimeters, RC Devices, and Battery Chargers! by Kyle Armstrong

These connectors are ruggedly constructed and accept 14 AWG speaker wire. I used a Hakko FX-888D soldering station set to 600F with 60/40 solder and it was easy to do. I would recommend tinning the wire before soldering the wire to the plug and applying flux to the inside of the plug to help the solder spread evenly over the inside of the glass. There was no sign of stress at the connector and solder joint, so I have a feeling they will hold up for years of normal use. I also tested the petal ends on some 5 position clamp posts and the size was right and the fit was snug but not too loose or tight. My only complaint is with the plastic material used for the connector housing. It is very stiff and hardly pliable at room temperature. The tolerances between connector and body are extremely tight and I found the reds to be even larger than the blacks where I had to use pliers and a lot of force to get the body onto the connector after soldering. I appreciate the tight fit where the housing doesn't just slide off the connector, but I find if the housing were slightly beveled and beveled, or the end of the connector was slightly beveled and tapered, it would be a lot easier to slide it onto the case Plug. connector after soldering.