This vintage meat grinder attachment appears to be aluminum. I have been told it is a Sunbeam Mixmaster brand, but am uncertain. There is rust on the blades and is being sold as-is. NOTE: I have many vintage Sunbeam Mixmaster items, including parts to the 1940s Mixmaster....milk glass juicer attachments, wooden pusher, screens, beaters, reamers, coffee bean grinders, meat grinder, etc.