Product Description London's Tower Bridge 3D Laser Cut Model Our 3D Laser Cut Models by Fascinations have amazing detail. Using micro laser etching, the models are cut from an 11cm metal sheet. They must be assembled. An instruction sheet is included. Pop out the pieces. Put them together. Show off your steel model. Intended for ages 14 and up. Please Note - These do not come preassembled. You must put them together.