The guard has a felt interior to protect the blade from scratches. It protects the fine edge. Offers safety when kept in a kitchen drawer. Great for the travelling chef who keeps knives in a carrying case. For narrow blades like Tomato Knife, Boning Knife, Bread knife, Sandwich knife, Carving knife and Fillet knife. 205 x 25 mm, for blades up to 20 cm (8″).