As with most Majacraft products, our whorls will fit on any of our wheels so you can use the variety we offer to find the exact ratio you are after. There are similarities in the sizes of some of the whorls so unless you are working to a paritcularly precise ratio, there may not be a huge benefit in using a Little Gem whorl on a Suzie for example.
The large Rose whorl is finished in clear lacquer and produces ratios of 4.2-15.6:1 with a Rose wheel. This whorl is also available as part of a Slow Speed Kit for the Suzie wheels.
The Slow whorl gives ratios of:
3.2, 4.25, 5.75, 8.5 and 11.5 to 1 on the Gem
3.25, 4.5, 6, 8.75 and 12 to 1 on the Suzie.