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Valve guide cleaning brush sets available in nylon and carbon steel. Both 7 piece sets include sizes
1/4”, 5/16”, 11/32”, 3/8”, 13/32”, 7/16” and 1/2” diameters. Overall lengths of brushes are10" or 12" with brush lengths 2” and 2-1/2”. For taking out old metal chips, the grinding compounds, the sludge and the dirt from the oil passageways and valve guides. Carded.
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