ProKennex Clear Groove Racquetball Dampener
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A long, clear dampener that stretches across four main strings; the four string grooves are staggered for a "weave" type application.

Comments: The string spacing needs to match up with the gaps in this damper, which I was unable to do comfortably. It felt like I was spacing the strings out too much. 
From: Anonymous, 12/15