Premium quality wooden rack designed to hold up to 6 test tubes vertically. Polished. Rack features 6 holes measuring 22mm in diameter. Measures 9.75" wide and 4.75" tall. Designed for use in professional laboratories, but is an ideal choice for science classrooms and household use. The design of this rack allows it to be repurposed in a variety of ways - can be used in kitchens to hold spices, tools or other utensils, or for crafting organization. Great for holding paintbrushes, pencils and drying fountain pens.