40 Cal RELOADING BRASS, indoor RANGE BRASS..(500+) or (1000+) Cleaned and lightly polished.....Mixed Head stamp. DO NOT PURCHASE IF YOU ARE NOT ALLOWED TO POSSESS THIS ITEM. Item will ship via USPS Flat Rate Envelope or FLAT RATE BOX if more than one item is purchased. Will add a few extras per pound for guaranteed satisfaction. Casings are a mix of Nickel and MOSTLY Brass. PLEASE READ ITEM DESCRIPTION CAREFULLY BEFORE PURCHASING. Great for arts and crafts projects..... If used for any other purposes you are solely responsible to insure safety and industry standards are followed. Brass Shack Creations makes no warranties either expressed or implied for the use of this product.