prueba

{% if product.type== 'Kolben' %}

Dimensiones

A {{ product.metafields.my_fields.kolbenfeld_a.value }}
B {{ product.metafields.my_fields.kolbenfeld_b.value }}
C {{ product.metafields.my_fields.kolbenfeld_c.value }}
E x F {{ product.metafields.my_fields.kolbenfeld_e.value }} x {{ product.metafields.my_fields.kolbenfeld_f.value }}
{% endif %}