The Sticky Hoop frame and Snap Hoop Monster frames are not interchangeable.
Snap Hoop Monster
The hoops are available in various sizes depending on the machine. Brands include Baby Lock, Bernina, Brother, Husqvarna Viking, Janome, Pfaff.
JANOME 500E -
The Snap Hoop for heavy-duty projects that need a monster grip!
Experience the effortless one step method to hoop and align heavyweight fabrics. The secret of this magnetic hoop is in the patented design. And now you can have the Snap Hoop Monster - 4x's stronger to handle heavier fabrics! Snap Hoop Hooping Systems Compatibility Chart