I've seen both, the essential series is sand casted in their foundry so it has a sand finish if that makes any sense but I applaud them for creating this lineup I haven't met a fish yet that requires a machined finish on plastic bait, we as fishermen have lost touch with reality when we require super smooth perfect symmetry and tight tolerances in a mold. I'm happy with my Del's combo mold 4" and 5" 2 cavities each identical to the senko