Janome MB-4 and MB-7 No. 1 Lettering Hoop J7 Genuine Janome MB-4 and MB-7 No. 1 Lettering Hoop J7 Small, single arm hoop - perfect for professional monogramming and lettering needs. The J7 Hoop measures 110x95 mm. Please note, the Monogram Hoop Holder is required when using this hoop. Fits Janome Models: MB-4, MB-4S & MB-7