A cable insulator this size is hard to believe. These little guys are about 1 1/2" across the base and 1 3/4" tall. They are threaded. One is a bit taller than the other. Great condition. I was told they could be from eastern Europe. Asking $25 for the pair of porcelain cables plus actual shipping. Check, money order or PayPal, no fee. The Jumbo is only for size comparison and not a part of the sale.