Betcha don’t know what this is! Aw heck, I’ll tell you. It is a plastic disk, and I’m no expert, but I’d venture to say it’s poly(methyl methacrylate). Wouldn’t you agree? Anyway, close enough. Attached to the disk are several pieces of steel, some stainless, others galvanized. This disk is the door to our ice cream machine. We just had to buy a new one because Ted broke the old one. This rather small, disklike door with several pieces of metal arrived from Taylor Ice Cream Products today. This plastic disk costs $617.00. Apparently Taylor mistook us for the Pentagon.