4.0mm banana plug (molding type) to XT90 Male Wired Connector
https://www.ludingtonhobbies.com/shop/src-8821-4-0mm-banana-plug-molding-type-to-xt90-male-wired-connector-14461
https://www.ludingtonhobbies.com/web/image/product.template/14461/image_1920?unique=00c8d60
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Manufacturer's Part #: SRC 8821
