This is the replacement Flywheel for the Tower Hobbies Tower Terror FEATURES: Aluminum construction, silver in color Press fit steel pins Replaces a worn or damaged flywheel INCLUDES: One Flywheel - key number 97 REQUIRES: Installation SPECS: Inside Diameter: .35" (9mm) tapering down to .28" (7mm) Outside Diameter: 1.15" (29mm) COMMENTS: For the clutch shoes and springs order TOWC6861 For the clutch nut order TOWC6850 For the clutch bell order TOWC6801 kpm01/23/2007 ir/jxs