Feature
1) Brass heavy knuckle add bottom weight to 46g for each, weight in bottom can improve climb performace greater stability and lower CG
2) Heavy duty 5x13x4mm outer bearing include, can help for more longlife and add the weight
3) POM bearing busing was include, easy for bearing removal
4) More rigid and durability
5) High quality CNC machined solid brass material with SAMIX word and L R etched
6) Direct fit on Axial std C-hub or samix C-hub
7) With break disk looking for look like real crawler
