CleverDelights 144 White Prewound Bobbins - Compatible With: SE400 SE425 SE600 PE525 PE540D PE770 LB6800PRW HC1850 and More - 7/16" x 13/16" - SA156 Replacement - 60wt - Size A Class 15 Bobbins 60 Weight - 100% Polyester High Tenacity Bobbin Thread Size A Bobbins - 7/16" x 13/16" Works perfectly with most Brother embroidery machines including SE400, SE425, SE600, SE1900, PE525, PE540D, PE770, LB6800PRW and more -- See product description for full compatibility list Perfect replacement for model SA156 (XA5539-151) bobbins CleverDelights brand