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Old 06-30-20 | 02:14 PM
  #6  
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dedhed
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Joined: Apr 2005
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From: Milwaukee, WI

Bikes: '68 Raleigh Sprite, '02 Raleigh C500, '84 Raleigh Gran Prix, '91 Trek 400, 2013 Novara Randonee, 1990 Trek 970

I'd surmise it's some sort of lawyer lip type device for wheel retention when loose
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