TroySys Glass Table Top, Flat Polish Edge, Annealed Glass, 18" L Round Glass table tops to be used as glass tops or glass covers for existing table or base 18'' inch round glass table top with 18'' inch diameter(1/8") This 18'' glass top has a flat polished edge This glass table top is annealed for added strength Round glass table tops available in many sizes including: 12, 14, 16, 18, 20, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 36, 37, 38, 39, 40