The Janome Embroidery Hoop SQ14b is compatible with the Janome 400E and 500E embroidery machines as well as the Elna 830 eXpressive. The embroidery field of this hoop is 5.5″ x 5.5″ or 140mm x 140mm. It is perfect for holding fabric and preventing stretching; making embroidering fast and easy to enjoy..