PART NUMBER :  TLST1139 DESCRIPTION : Titanium wheel shaft replaces LOSB3505 and LOSB3504. Fits all Losi LST stock parts. Weight - 10g (.4oz) each. left side - silver axle, black nut; right side - silver axle, silver nut. One axle is threaded backwards - to determine which nut fits which axle, test by putting the first nut on by hand so you don't ruin the threads. MANUFACTURED BY: Hot Racing