There are a variety of adapters that are basically one head to another available on eBay and Amazon

it’s just one type of head soldered to another with wire in between

I find them useful for temporary connectors

I have EC 3 to deans connectors so my friends’ cars will work with my Deans batteries

i’m certain I will move over to bullets over time, but currently I’m happy with Deans for stupid proofing

make sure you know whether you need a male or female head on either side

usually the male head is coming out of the speed control or car

female is on batteries