TORNILLO PARA ACOPLAR PRENSATELAS SOBRE EL HOMBRO Y LA BARRA DE PRENSATELAS. MODELOS SINGER: 185, 185J, 221, 222, 242, 247, 248, 257, 288, 301, 337, 347, 401, 416, 513, 514, 518, 522, 533, 538, 543, 603, 6136, 626, 629, 635, 635E, 640, 737, 750, 755, 756, 758, 770, 774, 775, 778, 834, 1105, 1106, 1120, 1130, 1507, 2440, 2502, 2503, 2504, 2505, 2515, 2517, 2530, 2543, 306K, 3116, 3270, 3314, 3317, 3343, 3810, 3820, 4205, 4206, 4210, 4212, 4220, 4228, 4562, 5417, 5430, 5050, 5802, 5805, 5806, 5808, 5810, 5830, 7360, 57815, 57817, 57820, 6110, 6212, 7436, CG-500, CG-550, CG-590 & DX14, XL-100, Quantum LE & SM-22.