This is a Hot Racing Brass Heavy Metal Knuckle Weight Set for the Traxxas TRX-4 Scale Crawler. Add weight to your crawler where it needs it - down low. Adds about 76g (2.7oz) to each steering knuckle.
Weight (each): 76g (2.7oz)
2x Brass Heavy Metal Knuckle Weight.
Recommended to use a removable-type locking adhesive on screws threading into metal