I had to clean a pair of pipe wrenches that had dried mud and other dirt on them (not mine). One of them was so dirty that the nut was difficult to turn. I only had an old toothbrush sized wire brush that was so worn the bristles looked like steel wool - not very effective for removing stuff stuck to wrenches. The size of these little guys is perfect for getting to the inside of the case where the nut is. After cleaning a 10" Hard and a 24" Stillson Monster with one of these (and there are plenty in the bag), the brush wires were only slightly worn. After applying WD40, the buttons look normal and work smoothly. You won't be disappointed!
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