The Gallagher Porcelain Doughnut Insulator is a great tool for changing the direction of your permanent fencing. It's fire resistant with a 1-1/2" diameter. The high-quality white-glaze finish is built to stand the test of time, and Gallagher backs that up with a 15 year manufacturer warranty on these products. | Gallagher Porcelain Doughnut Insulator in White | Size 10 Pack