Guaranteed to fit Durkopp Alder Sewing Machine Models:
Most sub-classes from models 067, 068, 167, 168, 169, 204, 265, 267, 268, 269, 367, 396, 467, 973

Guaranteed to fit Pfaff Sewing Machine Models:
Most sub-classes from models 1235, 1242, 1244, 1295, 1296, 1297, 141, 142, 1442, 1445, 1446, 145, 1455, 146, 195, 196, 238, 245, 246, 333, 335, 337, 34, 345, 345H, 346H, 36, 37, 38, 474, 545, 563, 646, Eco 45