The extra-thick, kinked phosphor bronze wire provides the intense scrubbing power needed to break through the toughest fouling in your bore. It may take a bit of effort to push it through, but the deep-clean results speak for themselves. These heavy-duty phosphor bronze bristles are tough on carbon deposits yet safe for your bore, offering powerful cleaning without scratching.

Phosphor bronze bristles with enhanced thickness
Precision-engineered steel, meticulously looped and expertly wound to form a robust shank structure

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