Offered: large electrical insulator, likely made of porcelain or ceramic. These are commonly used on high-voltage power lines and in electrical substations to prevent electrical current from flowing into supporting structures. A unique addition to any collection of insulators or to use as yard art etc. I have 2 of these and Im selling them individually. Measurement: 4 inch mouth X about 14 inches in diameter and 26 inches tall. Very Heavy and the chips are plain to see.