"3k" ndiyo nhamba yemafilaments kana saizi yemasumbu.Zvinongoreva kuti "bundle" yega yega yekabhoni fiber yakarukwa mumucheka ine zviuru zvitatu zvega kabhoni filaments.Hukuru huwandu (6k, 12k, zvichingodaro) zvinoreva gobvu kabhoni-fiber "masumbu" uye nekudaro machira akakora