Six different pieces allow a wide range of setups. The proportions are studied to let the shelves be arranged & put together. Many setups are available but the online tool lets you make your own design according to your space & your needs. They are available in many colours & finishes. Its conception & shape gives a good resistance, it can easily hold books & objects. The provided fixings are very simple. Each shelf is (cm) 126 x 18 x 13, (inch) 51 x 7 x 5