8in1 Magnetic Hoops for SEWTECH Embroidery Machines Machine Model:ST-1501 For RVM double head and

For RVM double head and single head series embroidery machine

Is this embroidery hoop compatible with Happy Japan  embroidery machines

Keep the magnetic surfaces clean and free of metallic debris

or a piece of adhesive tape

Inner Dimension: 7

8in1 Magnetic Hoops for SEWTECH Embroidery Machines Machine Model:ST-1501 For RVM double head andSewtalent supplies 8 in 1 embroidery magnetic hoops, designed as a versatile magnetic frame set. Each 8in1 embroidery hoop set includes 8 different sizes magnetic hoops perfectly suited for various embroidery projects. 8 in 1 embroidery hoop sizes details as following: 1 x 6 : It is used for small project such as socks, short sleeves. 2 x 4: It is used one woven and denim fabric. Also used on sock fanny packs, CD cases, handy for non hoopable items. 3