Description Metal Bobbin Version 1, three bobbins in one pack. The HD9 Version 1, The MB-4S and the MB-7 take a new generation of bobbin! This Jumbo Metal Bobbin holds 40% more thread than traditional L sized bobbins. More thread on the bobbin allows you to keep embroidering longer without interruption. Keep a few on hand so that you can wind a new bobbin using the independent bobbin winder on the machine so that you always have a full back up on hand for when you do finally run out. The current Version 1 Parts and the new Version 2 parts are not compatible If your bobbin case looks like a semi-circle, these are the correct bobbins. If your bobbin case looks like a full circle you will need a different bobbin. For Janome Sewing Machine Models: HD9 Professional, HD9BE, MB-4S, MB-7
