Mandril de Torno de 4 Mordazas K72-125……. In the product description, firstly described (in English) as “flexible independent jaws”. In the text following the heading says “Mandril de Torno Independiente de 4 Mordazas K72-125” but the text immediately following says “El portabrocas de torno autocentrante”. Is the product ‘independent’ or ‘autocentering’? Gracias, Ann