Magnetic whorls

To fit the Kromski Magnetic flyer when fitted to the Fantasia and Sonata spinning wheels. Gives two speeds with the following ratios...

• Slow whorl: 4 and 6 to 1
  
• Standard whorl: 5 and 8 to 1
• Fast whorl: 10 and 14 to 1
• Extra fast whorl: 18 and 20 to 1