The splayed utensil (AA5527) is a combined knife, fork and spoon and the Nelson knife is a combined knife and fork. Both are designed to help with one-handed eating. The small rocker knife is for cutting food with minimal rocking movement, and can be used in the double-ended cutlery handles to make one utensil more versatile. The large rocker knife has a broad semi-circular blade which is ideal for preparing larger food without cocking the wrist.