Got an RC battery or charger with a TRX plug but your speed controller or charger needs a Big Tamiya? No problem – just plug in this simple adapter! It's a solid, no-wire connector that goes straight from a male TRX to a female Big Tamiya socket. Super handy if you're mixing and matching gear in your RC hobby. You get 2 adapters in the pack, so you can leave one on your charger and one on your ESC, or have a spare. Just makes life easier when you don't want to cut and solder wires. Fits most standard LiPO, NiMH, or NiCd battery packs. A must-have little doodad for any RC enthusiast's toolbox.