the very sturdy heavy duty polyp grab is available from 250 to 500l and fits to scrap cranes as well as to excavators up to 7,5t operating weight. the independent moveable arms are mounted in a sturdy, rigid housing and a......the very sturdy heavy duty polyp grab is available from 250 to 500l and fits to scrap cranes as well as to excavators up to 7,5t operating weight. the independent moveable arms are mounted in a sturdy, rigid housing and allow optimum gripping of all kind of goods.