For basil, beets, chard, and pelleted carrots and lettuce with #13 size pellet.
12 extra-deep round holes, 19/64" (7.5mm) in diameter. Possible spacings (depending on seeder sprocket combination) from 2-5" apart. Seed rollers have slots or holes to cup seeds, allowing accurate singulation of very small to medium size raw seeds or pelleted seeds, and are compatible with even some larger seeds. Made of a special anti-abrasion plastic to prevent build-up of static electricity.
Trial data: Will singulate the following raw seeded varieties: Red Ace and Bull's Blood (beet); and Fordhook Giant and Rhubarb (chard). Will also singulate the following pelleted varieties: Nufar and Italian Large Leaf (basil); Nelson (carrot); and Breen, Adriana, Tropicana, Ridgeline, Ruby Sky, Rhazes, Focea, Teide, Australe, Rex, Ermosa, and Winter Density (lettuce).