I-Alien Series Biceps Curl inesimo se-curl sesayensi, nesibambo sokulungisa esizenzakalelayo esikhululekile, esingajwayelana nabasebenzisi abahlukene.I-ratchet elungisekayo yesihlalo esisodwa ayikwazi nje ukusiza umsebenzisi ukuthi athole indawo efanele yokunyakaza, kodwa ukukhuthazwa okusebenzayo kwama-biceps kungenza ukuqeqeshwa kuphelele kakhulu.Isihlalo sithuthukiswe ngokwe-ergonomically ukuze uthole ukusekelwa okungcono nokunethezeka.