Shun Classic gift sets and block sets include combinations of the masterfully crafted knives from their Classic series. Each set is a great value. The Shun Classic Series is known for its exceptionally sharp blade edges. These edges don't require frequent sharpening. The interior layer of each Classic Series knife from Shun is made from an exceptionally hard steel alloy. The outer layers keep the knife free from rust and breakage. The combination helps these knives stay sharp, without frequent sharpening.