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Old 07-25-2009, 04:17 PM   #41
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Join Date: May 2004
Location: FT. Lauderdale, Florida
Posts: 24,293

red and blue cam action clamps:

In this photo, note the inner jaws of the clamps. the red ones (pictured on the left) have grooves to assist in gripping the string, where as the newer blue ones appear to be diamond coated:

Roger Federer Pro Staff 97 Play test video
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