XT-60 XT60 Female Pigtail Connector Plug 10cm 12AWG Silicon Wire RC Lipo Battery
Even though the advertised wire diameter is 12AWG when I measure the conductor (without insulation) I seem to see it being larger than 10AWG. The wire is stranded so perhaps that accounts for it but it is definitely larger than 12AWG. I measured raw wire diameter as 0.12-in 3.01 mm. Very odd but good. I suppose.
For Creality Ender 3 series 3D-Printers, this is the connector you can use to attach the power supply if you crimp on some connector lugs.