Janome Upper Knife for Serger Models 3434D, 7933, 9102D, 634D, 1110DX, 204D, 8002D, 990D Upper knife for Janome and New Home models 204D, 3434D, 504D, 634D, 644D, 888, 7034D, 7933, 8002D, 1110DX, 888 Compulock, 9102D, 990D also Kenmore 385.16644690