Title: Great for stuck valves!
Review: Got my hubby a used trumpet for Christmas, and the valves were completely STUCK. He even tried gently pounding them out w/ a dowel rod and rubber mallet. He used a few drops of this and let it sit for a couple of days, and voila! Now hubby doesn't play it, our 3 year old does and the house is filled with beautiful music............ NOT! Would recommend it if you want your valves unstuck. If you have a toddler, I'd just leave them stuck. :)
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