PingRing™, solid resin ring designed to wear on a finger for testing instrument sharpness. A sharp instrument produces a ping sound, giving you an audible way to you know when you’ve achived a proper edge.
$3.99 Original price was: $3.99.$2.82Current price is: $2.82.
PingRing™, solid resin ring designed to wear on a finger for testing instrument sharpness. A sharp instrument produces a ping sound, giving you an audible way to you know when you’ve achived a proper edge.
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