Boston International Yacht Club Square Oars Glass Plate, 6 by 6-Inch Square tempered glass plate with design of oars on striped background Square plate is 6 x 6-Inch Oven safe to 350 degrees; freezer, microwave and dishwasher safe Tempered glass manufactured through a process of extreme heat and rapid cooling makes it stronger than normal glass Bold, graphic and modern- our tempered glass plates are a fresh take on coastal living