Check these out!

[voo2doo]

Just been moochin' on RC MODELZ site and found these:w00t:
http://www.rcmodelz.co.uk/product/Alloy-Enclosed-Hub-Nut-silver.php

Look pretty cool to me.And there are a load more hop-up's there too.
J

 

[slowngreen]

Are they a scale nut or a nut cover? Look good either way.

 

[renbar]

but if they are a nut how would yo do them up tight enough,do look good

 

[Lan-Ed-Tul]

prolly use a allen wrench in one of the allen heads and using afrom the side type torque tighten them down or loosen the entire hub , if you follow what im saying

 

[slowngreen]

Like a hex hub kinda with a grub screw? Maybe.

 

[Lan-Ed-Tul]

like this using the allen in a allen head like a lever to tighten / loosen it