This is a pair of Throttle Return Springs for the Traxxas 2.5 engine. FEATURES: Features steel construction and a silver color finish INCLUDES: Two throttle return springs REQUIRES: Assembly onto the vehicle SPECS: Length: 1.3" (34mm) 10/06/02-TRN ir/kh updt jxs 1/07/05 BOX DIMENSIONS: 2.50" W. X .25" H. X 3.13" L. BOX WEIGHT: .01 LBS.