The 25 mm commonly used in the C130's and the Bradley's Big green casing and a fake 'bullet" all metal and no explosives. Great for decor your Desk, hunt camp or Man Cave These have been fired and have no explosive materials remaining. most have signs of being Fired Dropped kicked dragged ignored weathered collected boxed and shipped. Other than that they are in excellent condition! Occasional dust rust and scuffs, Nothing caved in, shot thru, gouged, cranked, bored cored or gored. 20 cm tall 38 mm base 25 mm neck weighs 450Gr