Grapples, ko grabs, suna samuwa ga duk masu tonawa kuma suna da dorewa, ingantaccen bayani don buƙatun sarrafa kayan aiki na dogon lokaci.
Kayan aikin injin yatsa guda biyar yana motsa shi ta hanyar silinda guga mai tono kuma kamar yadda yana da amsawar geometric tare da taurin hannu wanda aka liƙa zuwa maƙalli a hannun dipper na injin.