6x30 to 14mm Hex Adapters for 6x30 2.8" Wheels
https://www.ludingtonhobbies.com/shop/pro634700-6x30-to-14mm-hex-adapters-for-6x30-2-8-wheels-23
https://www.ludingtonhobbies.com/web/image/product.template/23/image_1920?unique=d8bd69c
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Manufacturer's Part #: PRO634700
