This Listing is for 1 Piece of Fascinations Metal Earth Metal Works 3D Laser Cut Steel Model Mars Rover . Mars Rover Mars Exploration Rover NASA's twin rovers, named Spirit and Opportunity, launched separately in 2003 and landed three weeks apart in January 2004. They made important discoveries about wet environments on ancient Mars that may have been favorable for supporting microbial life. Although Spirit ceased communicating with Earth in March 2010, Opportunity continues its work on the Red Planet. Item#: MMS077 Number of sheets: 2 Sheets Difficulty: Moderate Assembled Size: 3.67" x 3.35" x 2.34" (9.4 x 8.6 x 6 cm) Assembly is required, instruction paper is included. These Amazingly detailed DIY model start as 4" square steel sheet and finish as amazing 3D model.Use the easy to follow instruction to pop out the pieces, bend the tabs, and connect at the attachment points. Build your own collection today!