knives 1-3 are knives with long holder ; pointed end and short blade. Good for slitting and carving different lines
knives 4-6 are knives with long blade and curved but short holder. Good for coring inner part like the flesh or the seeds of the vegetables or fruits
knives 7 A knives with straight- short blade and pointed end. Good for slitting, coring and discarding the fruits and vegetables in straight direction