Price history on Walmart.com for
Jo-Ral Tenor or Bass Trombone Straight Mute Cork 3-Cork Pack
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Jo-Ral Mute Corks feature a neoprene-enhanced composite. The result is a more pliable cork that grips well and does not dry out become brittle or break off so it lasts longer while easily accommodating fine adjustments for a perfect fit. In an emergency the self-adhesive design makes for a quick fix.
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