Replacement Head for Hunter TC Series models, Butler ELX and Ergolock Series Changers(Non-Leverless Only), Accuturn/Bosch 220S, 4225, 4230, 4335, 4465, 4540, 5210, 5320 models, Sicam 326, 520, 526, 530, 720, 726, Grifone 516, Colibri 512, Falco 3009 models.