Range versus explicit numbers
A range is described by three values: where it starts, where it ends, and the step between entries. Starting at 1, ending at 10, and stepping by 1 produces ten segments. Stepping by 2 from 2 to 20 produces the ten even numbers instead. When the set is not a clean progression, switch to explicit numbers and paste the exact values you want.
How this differs from a random number generator
A direct generator returns a number as text. A number wheel returns the same kind of unbiased selection but shows it as a segment on a wheel, which is useful when people need to see the draw happen rather than read a result. Both use the same secure browser randomness, so neither is more random than the other.
Bounded sets keep the draw readable
A wheel supports up to 100 numeric values, because a larger set cannot be read as segments. If you need a single number from a much wider range, a direct generator is the better tool since there is nothing to display on a wheel.
What stays private
The numbers you enter are held in this tab only. Nothing is uploaded, stored in an account, or written into the page address, so a range you use stays on your device.