This is a set of two MST MG 1.9" Crawler Tires. These tires are included with the MST CFX-W and measure 40mm wide, with a 120mm (4.7") outer diameter. While these tires are not officially licensed, they are scale replicas of the Nitto Mud Grappler Extreme tire. These tires work well and provide a great option for people looking to put something a little different on their next scale build. Available in soft and medium compounds. Package includes two tires and foam inserts.