In 1976 Fritz Güttler had every intention of developing a roller system suitable for the establishment of cereal crops. He developed the first prisma ring but only had pasture land to test his new design. During testing it became obvious that this unique profile was not only ideal for the establishment of cereal crops, but also perfect for the maintenance of grass and pastureland.

Wox Website : http://www.woxagriservices.co.uk/products/guettler/grassland-management/