Lihokelo tsa pina ea Crafts li etsoa ho latela maemo a OEM.Lihokelo tsohle tsa pina ea Crafts li entsoe ka tšepe e khethehileng ea 35MnB.Ha re bapisa le lihokelo tse ling tsa pina tse entsoeng ka 40MnB kapa 40Mn, likhokahano tsa rona tsa lipina li betere ho thata le ho hanyetsa ho hlabang.