These are the JConcepts Goose Bumps Tires for use on the Traxxas Slash and Associated SC10 Vehicles. FEATURES: Step Pin and Bar Lug design in super soft Green compound-ideal for all track conditions Allows even greater control on slightly loamy and wet tracks The Goose Bumps are a special breed, designed for maximum performance when new or used as the design allows even wear all the way down to the tire body. YOU WILL RECEIVE: One pair of tires along with one pair of firm foam inserts REQUIREMENTS: Installing with CA tire glue (DTXR2000) SPECIFICATIONS: Inside Diameter: 2.2" (55.9mm)/ 3.0" (76mm) Outside Diameter: 4.25" (108mm) Width: 2" (52.45mm) description revised by: DB November 10, 2012