Ibikoresho fatizo bya silicon core tube substrate ni polyethylene yuzuye cyane, igice cyimbere cyakoresheje coeffisiyonike yo hasi ya coefficient silica gel ikomeye ya lubricant. Nukurwanya ruswa, urukuta rwimbere rworoshye, gazi yoroshye yohereza insinga, nigiciro gito cyubwubatsi. Ukurikije ibikenewe, ingano n'amabara atandukanye ya tebes ntoya yibanda kumurongo wo hanze. Ibicuruzwa bikoreshwa muburyo bwa optique ya terefone itumanaho ya gari ya moshi, gari ya moshi nibindi.