The Embossing-depth indicates the diameter of the Embossing-depth . The pitch indicates the distance from center to center of adjacent Embossing-depth . It defines how close the embossings are arranged to each other.   Example: A Embossing-depth pitch of 20-50 means that the Embossing-depth has a diameter of 20.0 mm and the distance from the center of one Embossing-depth to the other is 50.0 mm.