"3k" ndi chiwerengero cha filaments kapena mitolo kukula.Zimangotanthauza kuti "mtolo" uliwonse wa ulusi wa kaboni wolukidwa munsalu umakhala ndi ma 3,000 amtundu wa carbon.Kuchulukirachulukira (6k, 12k, etc.) kumatanthauza "mitolo" yochuluka ya carbon-fiber ndipo motero nsalu zokhuthala