These Dolphin shaped knives are ideal for cutting while avoiding scrapping the knuckles. They can cut more resistant materials (cardboard, leather, plastic, paper). The body is of lightweight aluminium which combines easy using with durability. For a strong blade lock, there’s a high quality brass wheel. The blades can be changed rapidly without any tools. These come with 3 heavy duty blades. Available with a sheath, the blades can be stored inside the handle. Comes with magnet and dual notch.