It is made of tuff steel and has a built in roller to guide the edge of the wheel your are mounting a tire on. See below for a full list of all tire machines this head fits. Also view the pictures for tapered hole explanation.
TMR TC182788 Stainless Steel Mount/Demount Head for Tapered Shaft (Duck Head)
Tire Changer Metal Steel Mount Demount Head Tapered Duck Fits Coats®* 81827881
Coats S. Steel Duck Head Mount Demount Tapered with Insert 8182788 Duckhead
Coats 8182788 - S. Steel Duck Head Mount Demount Tapered with Insert Duckhead
Tyre Tire Changer stainless steel metal Bird Head Mount Demount Duck Head 30mm
Motorcycle Tire Changer Duck Shape Head, Cast Steel Mount Demount
