Pec Fly / Rear Delt ndi makina ogwiritsira ntchito awiri omwe amalekanitsa bwino chifuwa chokhala ndi manja osinthika komanso zogwirira ntchito.
Posintha malo oyambira ndikuyang'ana pamakina Watson Pec Fly / Rear Delt imaperekanso njira yabwino yodzipatula kumutu wakumbuyo kwa ma delts.
Kupanga ntchito yolemetsa kwambiri komanso kulemera kwa 100 kg kumapangitsa makinawa kukhala abwino kwazaka zambiri akuzunzidwa m'malo ochitira masewera olimbitsa thupi olimba.