CLAMSHELL SPARK SHAKER CLAMSHELL SPARK, SET OF TWO Clamshell Spark Shakers have a single solid weld holding the two halves of the shell together like a hinge. When you squeeze the two halves together, you get a wildly variable pitch response. It comes in two pitches, for high-low combinations.?
FEATURES A set of two Wildly variable pitch response
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