16pc Hobby Knife Set Blade are made of 65Mn Steel It is packed in storage plastic case. Available color:black,yellow,blue,red 16pc Hobby Knife Set Blade are made of 65Mn SteelIt is packed in storage plastic case.Available color: Black, Yellow, Blue, RedContains:13pc Knife Blade2pc Needle1pc Hobby Knife Handle 16pc Hobby Knife Set