Ƙarfin Ƙarfin Ƙarfin Hammer wanda aka ɗora Kwatancen Ƙafar Ƙafar Ƙafar An ƙera shi don rage damuwa na haɗin gwiwa da kuma samar da danniya kadan a kan madadin tsokoki.An horar da motsin hamstring ta amfani da na'ura na musamman wanda ke ba da izinin daidaitawar mai amfani ta musamman ta hanyar ƙarfafa gwiwa don taɓa cinya da kyar yayin saitawa.
Ƙarfin Hammer Select Leg Curl yana ba da madaidaicin kusurwa tsakanin hip da ƙirji don rage damuwa na baya kuma yana da daidaitaccen matsayi na farawa.