This Arrowmax AM-030003 item is an RC-scale wheel fastening accessory supplied as 2 pcs of M4 threaded titanium wheel nuts. They are intended for RC cars that accept M4 wheel fasteners and can replace steel nuts where a lighter or titanium option is preferred.
Installation notes: check that your hub or wheel uses an M4 thread prior to installation, clear mating threads of dirt, fully seat the nut against the wheel or adapter, and tighten to a secure feel without over-tightening; confirm tightness after initial running. These nuts are suitable for regular maintenance and precise wheel clamping tasks.
Compatibility tip: ensure adapters, hubs, and wheel hexes match M4 specifications to avoid cross-threading or poor seating; inspect threads and seating surfaces routinely.
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