Our pipe cleaners are approx. 15cm unbleached tapered cotton. The cotton enables the absorption of moisture as well as light abrasion to remove any residue from the walls of the chamber. The tapered shape of the cleaner also allows variation in diameter, increasing the usability of the product.
TIP: If the cleaner won't pass through the hole in the shank, give the end a bend - about 45 degrees and a couple of mm / 16th inch, then it should pass through easily.
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