| Options or range | Defines what values users can scroll through | Use it when the answer set changes |
| Visible items | Controls how many rows show at once | Increase it for a more open feel, reduce it for a tighter picker |
| Item height | Controls how tall each row feels | Adjust it when the picker feels cramped or oversized |
| Initial selected item | Sets the starting value | Use it when a sensible default improves completion |
| Wheel height | Sets the overall component height | Use it when the picker needs a stronger presence on the screen |
| Center highlight background | Emphasizes the current row | Use it to make the active choice obvious |
| Center highlight border | Adds definition to the selected row area | Use it when contrast is low |
| Default text style | Changes the look of non-selected rows | Keep it readable but quieter |
| Selected text style | Changes the look of the active row | Use stronger contrast or weight for the selected value |