1. 5 blades, gluing/carving/cutting/carton cutting, strong toughness and durability 2. 10 degrees double blade opening, narrow and straight blade, sharp and durable 3. Material: SK5 steel 4. Quantity: contains 15 small boxes, 10 pieces / small box, a total of 150 pieces 5. Blade thickness: about 0.4mm. 6. Note: only the blade, not including the handle