Mechanical Coupler- Spring Spring kapangidwe kake, ndi kamangidwe kosavuta kokhala ndi pempho locheperako.Kuyika kosavuta, kokwanira bwino ndi Excavator yanu.Zinthu zamphamvu zimathandizira kuphatikizikako kukhala kolimba komanso moyo wautali wogwiritsa ntchito.