Alien Series Biceps Curl ili ndi malo opindika asayansi, okhala ndi chowongolera chokhazikika chokhazikika, chomwe chimatha kutengera ogwiritsa ntchito osiyanasiyana.Ratchet yosinthika yokhala ndi mpando umodzi sikungothandiza wogwiritsa ntchito kupeza malo oyenera oyenda, koma kukondoweza kogwira mtima kwa ma biceps kungapangitse maphunzirowo kukhala abwino kwambiri.Mpandowo wakhala wokongoletsedwa ndi ergonomically kuti uthandizidwe bwino komanso chitonthozo.