Ko te mīhini whakapakari tinana raupapa F, F86, he mīhini whakapakari tinana teihana rua, arā, he whakangungu i ngā uaua o Biceps me Triceps i runga i te mīhini kotahi. Kei roto i te Biceps Curl / Triceps Extension he huinga pupuri biceps / triceps hei whakauru i ngā mahi e rua i roto i te mīhini penapena wāhi kotahi. He ratchets whakatikatika nohoanga kotahi mō te tūnga tika o te mahi me te whakamarie pai. Ka taea e ngā kaiwhakakorikori te whakamahi ngāwari i te taumaha tāpiri mā te pēhi noa i te rīpene hei whakanui ake i te kawenga mahi.