yet another thread about locking rear diff well sorry about this well iam new to electric drifting i just want to know how can you lock the rear diff for tamiya tl01 i dont even know what should i lock

well i saw this in youtube
http://www.youtube.com/watch?v=GMbbyxaI_BY
will this work on TL01? and in the video where he puts t he tube is that the one that need to be tighten ? hope you guys can help me out
thx