Aeroblades - 2 Pieces of 5.5 Inch Small Throwing Knife Set with Nylon Sheath These throwing knives are 5.5 inch overall in length. Its material is stainless steel. Nylon sheath with arm bands are included. Nylon sheath features two elastic bands with Velcro that can be secured on an arm and other applications. Item is packed in a sealed manufacture package.