4 Apr 2008, 11:46 (Ref:2169438)
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#127
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Veteran
Join Date: Dec 2005
Posts: 1,164
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They sit on the outside of a 2" shoulder strap, and stop it from sliding off, especially prior to and during belt tightening. Once they are fully tight they probably don't do a great deal that the high friction surface doesn't manage.
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Dallara F307 Toyota, MSV F3 Cup - Class and Team Champion 2012
Monoposto Champion 2008, 2010 & 2011.
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