CleverDelights 36 Pack White Prewound Bobbins - 60wt - Size L Bobbins - SA155 Replacement - 3/8" x 13/16" - For Brother Embroidery Machines &ndash; PC Series, PE Series, PS Series, and More 36 White Prewound Bobbins 60 Weight - 100% Polyester High Tenacity Bobbin Thread - Approximately 120 Yards per Bobbin Size L Bobbins - 3/8" x 13/16" -- Perfect Replacement for Model SA155 Bobbins See product description for full compatibility list CleverDelights brand