IN STOCK - Schacht Whorls - Note Regular and Fast Whorls come with Matchless, Ladybug and Sidekick Complete Wheels. High Speed and Super High Speed require high speed bobbins when using in double drive mode. Slow Whorl: Recommended for beginning spinners to slow the speed down and avoid over twist. Also a good whorl to have for spinning your worsted weight yarns. This is the 2nd largest whorl shown in the photo. Ratios: 6:1 and 7.5:1 on Matchless / 5:1 & 6:1 on Ladybug / 4.25:1 & 5.25:1 on Sidekick Medium Whorl: This whorl comes with the Schacht Wheels. Ratios: 9:1 & 11:1 on Matchless/ 7:1 & 9:1 on Ladybug / 6.25:1 & 7.5:1 on Sidekick. It is the 3rd largest shown in the photo. Fast Whorl: This whorl comes with the Schacht Wheels. Ratios: 9:1 & 11:1 on Matchless / 10.5:1 & 12.5:1 on Ladybug / 9:1 & 11:1 on SidekickIt is the 4th largest shown in the photo. High Speed Whorl: If spinning in double drive mode, you will need to use the high speed bobbins when spinning with this whorl. If spinning in scotch tension, you can use regular Schacht bobbins. This whorl does not come with the Schacht Wheels. Ratios: 17.5:1 & 19.5:1 on Matchless Wheels / 14:1 & 16:1 on Ladybug / 12.55:1 & 15.25:1 on Sidekick This is the largest in the group of 3 small whorls in the photo. Super High Speed Whorl: If spinning in double drive mode, you will need to use the high speed bobbins when spinning with this whorl. If spinning in scotch tension, you can use regular Schacht bobbins. Ratios: 18.5:1 & 22:1 on Matchless /Not recommended for Ladybug or Sidekick. This whorl is not recommended for the Ladybug or Sidekick Wheels. This is the second smallest whorl shown in the photo. (Note: the smallest whorl shown in the photo is no longer produced and it is not available anymore.) Email or call us with any questions you may have. Whorls are kept in stock. Note: Extra Slow Whorl is a different price...see item below to order.