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A 9 inch long brush with 3 inches of china bristles for easy cleaning of test tubes.
A 9 inch long brush with 3 inches of china bristles for easy cleaning of test tubes.
A 9 inch long brush with 3 inches of china bristles for easy cleaning of test tubes.
A 9 inch long brush with 3 inches of china bristles for easy cleaning of test tubes.
A 9 inch long brush with 3 inches of china bristles for easy cleaning of test tubes.