Pfaff Bobbin Case 91-105544-91 Bobbin Case with Bobbin Sensor Opening and Low Bobbin Indicator Fits Pfaff models: 905, 955, 1006, 1007, 1010, 1037, 1047, 1051, 1067, 1069, 1071, 1147, 1151, 1171, 1371, 1467, 1469, 1471, 1472, 1473, 1475, 2010, 2020, 2030, 2040, 2140, 6085, 6091, 6112, 6122, 6152, 6230, 6232, 6250, 6270, 7510, 7530, 7550, 7560 and 7570