This is Hot Racing Brass +4mm Steel Axles Wheel Weights Set For Axial SCX24.
For: Axial SCX24
CNC machined solid brass billet
5g each fitted to the +4mm Steel Drive Stub Axlex lower the vehicles center of gravity, increase its stability, improve climbing, reduce the chance for flipping backwards, and make for an overall more capable crawler
5g Brass +4mm Steel Drive Stub Axle Weight (4 pcs)
O-Ring (4 pcs)
Screw (5 pcs)