Gen 1 ENVE carbon hubs were equipped with DT180 internals and Ceramic Speed bearings. Below is a link to a bearing service kit from Ceramic speed
https://www.ceramicspeed.com/en/cycling/shop/wheel-kits/enve-1/

• 2 x 61803 bearings rear hub shell
• 2 x 61702 bearings front hub shell
• 1 x 15267 bearing freehub
• 1 x 61802 bearing freehub