battery cable terminations for finely stranded 2/0 cable.

I cannot find where it states that the Flex Boss 21 has mechanical screw lugs approved for fine stranded wire per NEC 2020, 2020 NEC Section 110.14, connectors and terminals used for fine stranded conductors must be explicitly identified for the specific conductor class. I have been told that the wire shall be terminated utilizing crimped, heavy-duty closed-end copper compression lugs, or secured using specialized mechanical terminals listed for fine-stranded wiring (ferrules). I thought I remember someone had stated you do not need to add a ferrule or compression lug. Does anyone know if the mechanical screw lugs are approved for fine stranded wire?  Thanks, Bob C