18 in. round clear glass table top can be used as a table top to protect a Desk table, Patio table, surface of an existing table, Coffee table and Bed Side table. Recommended: May you use 18 in. Clear Round Glass Table Top as Corner table, bedside table top or side table top. Available Sizes: Clear Round Glass Table Top available sizes from 12 in. up to 72 in. many different thicknesses and polished. Clear glass: 18 in. Clear glass processed to be as close to perfect as possible through a curing process yields no air bubbles. Tempered Glass: Tempered (toughened through a process of extreme heating and rapid cooling during manufacturing process) glass is two or more times stronger than annealed glass. When broken, it shatters into many small fragments which prevent major injuries. This type of glass is intended for uses requiring superior strength and safety properties while standard glass could pose potential risk of injuries. Pencil Polished Edge: Usually The 18 in. Pencil Polished Edge, Tempered, 3/8 in. thick Square clear glass table top is popular on Oval and Circle glass shapes. The side edge is rounded, which gives it a smooth beautiful look. Color: 3/8" Thick Pencil.