I buy both my bobbins and needles in Wal-Mart. They have bobbins specially for Brother/Janome, if you prefer that. I also get them on Amazon. Type in bobbins for Janome and they will pop up. My Janome and Brother machines take all the same bobbins.The number is SA 156. For needles I use size 11 thru 14 the most. For cotton I use sharp point, for knits ballpoint. Make sure the needles have one flat side. Most needles are made that way, but I do still have some round ones and I think some Singer machines might still use those. Hope this will help you out.