50 plastic bobbins that will fit the following models of Pfaff. 917, 927, 947, 1006, 1025, 1027, 1035, 1047, 1069, 1147, 1199, 1209, 1213, 1214, 1215, 1216, 1217, 1222SE, 1229, 1469, 1471, 1151, 1171, 1371, 1467, 1472, 1473, 1473CD, 1475CD, 2010, 2020, 2030, 2040, 6085, 6086, 6091, 6110, 6112, 6120, 6122, 6150, 6152, 6230, 6232, 6250, 6270, 7510, 7530, 7550, 7560, 7570 Bobbin diameter measures 5/16" thick