Set of four! Classic ninja designs are applied to this set of cards. These are no ordinary cards, they are made of stainless steel and sharpened on the edges. The sharpness of the edges seem to cut right through the surface of whatever it is thrown at. Please handle safely. This 4 Piece set of Ninja Shinobi Steel Throwing Cards comes with a FREE Nylon pouch. Right now, take advantage of this offer. Overall Length: 3.87 Inches. Construction: Rectangle, Stainless Steel. Thickness: 2.53mm. Sharpness: Mild Sharpened Edges. Color: Metal, Black Designs. Includes: FREE Nylon Pouch, Belt Loop.