FLY RC 20 Pairs 4.0mm 4mm Banana Bullet Connector Plug Male Female for RC Battery ESC Motor

works perfect, nothing wrong. a tad expensive.

I swear by these banana plugs for connecting BLDC motors to the controllers on my electric scooters. Each one can pull about 90amps instantaneously. (Note. That doesn’t mean continuous draw).They’re the right size to provide enough power but still fit through fiddly holes in the frame.In addition a small hole in the plug lets you put a pointy soldering iron tip in to heat it up, melt the solder into the cup, push in the wire while removing the soldering iron tip… and boom instant, solid connection every time!

High quality and they work just as expected.

They seem to work well if I had one complaint because I wish they were a little bit longer so you had more contact area to solder the wires into and contact area for insertion

Came on time and just what I was looking for.

Wasn't sure if these could be used for home audio, since they are marketed for RC cars; the 4.0mm version definitely can! Was looking to create 'incognito' banana plug binding posts for some DIY Atmos modules I'd built (see pics). These were really easy to use, once I figured out the process (pre tin the wires, insert soldering iron into the hole on the side of the connector, fill the connector to the top with molten solder, insert the pre-tined wire into the molten solder as you withdraw the iron from the hole, hold the wire in place for a few seconds as the solder solidifies). For the price, these are also a great deal compared to the cost of binding post terminals + banana plugs. Wish I'd discovered these sooner!

These work really good for making link dipoles or connecting radials to portable vertical antennas.

works as expected