Ukucubungula okuningi kwamasongo e-piston, umshini wokugaya i-double disc surface 

Usebenzisa idivayisi yokulayisha nokulayisha ngesandla, ukusebenza kahle okuphezulu futhi kulula ukuyisebenzisa 

Duplex umshini wokugaya.Owesifazane oyedwa angayisebenza, imboni izosindisa insangu yabantu.