crimp terminal suitable for use with XH2.54 style (JST orginally) connectors. Commonly used in 3d printer board to connect fans and stepper motors, and  as battery connector.Gender of XH connector is quite ambiguous, This part gets crimped to wire and along several others like it goes inside plastic shell and form a plug.for 30 to 22 AWG wire Phosphor Bronze  2A/250V.