BO-45 BOBBIN Description BOBBIN 20.2 PAI,6 PAI,31.2MM NICKEL PLATING. HARD FITS DURKOPP 61,62,630,631,632,633,640,641,642,643,644,OP,NEW LONG DD-3,6,SINGER 45K,YAKUMO,NAKAJIMA DD-N73,DDN-738,DDU-N73 Inquire Now