used to be used to make sure race car wheel nuts don't fall off (for the type of cars using 1 wheel nut, like F1, GTs etc

can't seem to find them anywhere, i don't know if they're that common in racing anymore, but i can only find them in USA for $25 each

surely they can be had cheaper here

[Edited on 30/9/07 by blakep82]

try ondrives
or rhino which is a sister company.

They do torsion springs so you might find something similar

Rob