Whats type of connector is the power out plug on the CA?

Hi guys.
I've just bought a DC-DC converter for powering USB devices, and a light which I want to connect to the Cycle Analyst. Can anyone tell me the connector type of the power out please so I can buy a couple of the female equivalent? And if anyone knows of a good (UK) source then that would be helpful too. Cheers!

https://www.radioshack.com/size-m-coaxial-dc-power-plug/2741577.html

awesome, cheers.