This ruler features a thin and lightweight aluminum body with a clip function. Thicker than previous models and more power (0.5mm to 0.8mm) More durable and less likely to bend. Both sides have a simple scale (3.9 inches (10 cm)). It is a functional ruler that can be used as a bookmark if you clip it to a notebook or notebook. Some of the different colors are used in the detailed images. Size: Height = Width = Width = 150mm Thickness = 5mm Product Color Trend:Black