Skip to product information
1 of 1

Kromski Extra Slow (Jumbo) Magnetic Flyer Whorl

Kromski Extra Slow (Jumbo) Magnetic Flyer Whorl

Brand: Kromski

SKU: SKU: KMWJ-1U

Regular price $41.00 USD
Regular price Sale price $41.00 USD
Sale Sold out
Free Shipping over $99
Earn approximately 205 points with this purchase. Learn more
People Are Looking At this!
Color
Quantity
Easy 30-Day Returns
shipping icon

Order in --:--:-- for same-day shipping

Ships today from our Spokane, WA warehouse if you order by 1:00 PM PT

The Extra Slow whorl, often called the Jumbo whorl, is the slowest in the Kromski magnetic flyer lineup. Reach for it when you want low-twist yarn: bulky singles, art yarn, thick-and-thin, novelty, and chunky three-ply. It is also the whorl most spinners pair with the Magnetic Jumbo Flyer Set when filling jumbo bobbins with thick yarn.

Two ratio grooves on one whorl. The slower groove gives barely-twisted singles for chunky and art yarn. The faster groove suits soft worsted-weight singles and balanced bulky three-ply. The slow ratios also help when plying delicate singles where you want to add minimal twist.

Fits the Kromski Fantasia and Sonata Encore

This is a magnetic-flyer whorl. It will fit any Kromski wheel with a magnetic flyer head:

If you have an original (pre-Encore) Sonata with the traditional non-magnetic mother of all, this whorl will not fit until you add the magnetic flyer upgrade.

Ratios on this whorl

Drive wheel diameter changes the effective ratio, so the same whorl produces slightly different ratios on each wheel.

Wheel Low ratio High ratio
Fantasia (18 In drive wheel) 4:1 6:1
Sonata Encore (19 In drive wheel) 4.5:1 6.5:1

The four magnetic flyer whorls

Kromski makes four interchangeable magnetic flyer whorls. Each one covers a different part of the spinning range:

Whorl Fantasia ratios Sonata Encore ratios Best for
Extra Slow (Jumbo) (this page) 4:1 and 6:1 4.5:1 and 6.5:1 Bulky, art yarn, jumbo flyer plying
Standard Slow 5:1 and 8:1 5.5:1 and 9.5:1 DK to worsted, general purpose
Standard Fast 10:1 and 14:1 10.5:1 and 15:1 Fingering, sock, fine three-ply
Extra Fast 18:1 and 20:1 20:1 and 22:1 Laceweight, fine cotton, fine singles

Specifications

  • Type: magnetic flyer whorl, two ratio grooves
  • Compatible wheels: Kromski Fantasia, Kromski Sonata Encore, original Sonata with magnetic flyer upgrade
  • Material: turned wood, finished to match the Kromski wheel finish
  • SKU: KMWJ-1U
  • Made in Poland by Kromski

Compatible accessories

View full details

Why Paradise Fibers?

Your trusted partner in creativity since 1997. Family-owned, expert-driven, and dedicated to fueling your passion.

Real "Fiberers" on Staff

Family-owned and staffed by passionate experts offering real advice to support your creative journey.

A World of Fiber

Over 20,000 in-stock yarns, fibers, and tools, shipped quickly to keep your inspiration flowing.

Trusted by the Flock

Serving over 250,000 happy customers with a 4.9-star rating based on 10,000+ verified reviews.

Frequently Asked Questions

Most orders ship within 24 hours from our Spokane, WA shop (Monday–Friday). You’ll receive tracking as soon as your order is on the way!

Many of our products are beginner-friendly, and we make this clear in the product description.

You can also explore our kits and bundles, they include everything you need to get started with confidence.

Each fiber has its own feel and function. Merino is super soft and great for next-to-skin wear. BFL (Bluefaced Leicester) is strong, with a lovely luster. Need help deciding? Reach out! We’re happy to help.

For Yarn, check your pattern's yardage requirements. A standard pair of socks usually takes 100g of fingering weight, while a hat takes about 100g of worsted.For Spinning Fiber, a standard 4oz braid will generally make a pair of socks or a hat. For larger garments like sweaters, you will likely need 1.5 to 2 lbs of fiber.Still unsure? Send us your project details! We are happy to do the math for you to ensure you don't run short.

If a product goes out of stock after you order, we’ll notify you right away with options: a refund, a substitution, or a backorder (when possible). We never leave you hanging.

We offer 30-day easy returns on most unused products. If something arrives damaged or missing, we’ll make it right. Just contact our support team.

Yes! Our project kits and beginner bundles include hand-picked materials, tools, and instructions — so you can dive in without the guesswork.