Comparing 2 boards

These two are a long way apart on volume, so they are not really alternatives to each other.

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Disk

Chemistry Surfboards

Length

4'6"–6'8"

Volume

—

Shape

twin fin

Fin setup

Single fin

Video

3 clips

Remove

METATWIN

Roberts Surfboards

Length

4'8"–6'5"

Volume

—

Shape

twin fin

Fin setup

Twin

Video

2 clips

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Up to 4 boards at a time. Volume and length are the shaper's published ranges across all sizes of the model, not a single board.