Antenna strain insulator in olive green black glass. Measures approx 3 5/8" long x 1 1/4 diameter at the largest ring. In perfect shape, maybe a small ping if you look hard enough with a magnifying lens lol. Asking $50 which includes shipping anywhere in the lower 48. PayPal accepted using the no fee option. Personal checks are fine also. E-mail with any questions and thanks for looking.