This desk has a unique design in that the bookcase is not the traditional bookcase and the connection desk can rotate around the bookcase. There are casters under the desk, so it would be easy to rotate the desk. You could decide to rotate the connection desk to any location, parallel or straight angle is all your choice. There is also a button on the caster to lock it in case of slippery. The main material is manufactured wood which is anti-scratch and water-proof. The metal frame is rust-free. The desk has three colours for your choice, you could pick up your favourite one.