Axle keys sized to match your chassis brand and axle diameter, keeping your axle properly aligned and free of play. Available in:
- BirelART/CompKart 50mm axles
- OTK/TB Kart/KR (Kart Republic)/Parolin 50mm axles
- BirelART/Parolin/KR/Energy, etc. 30mm axles (does not fit OTK)
