{HEAD ~ This drum wall} 5 has on the outside a plurality of plastic elevations such as {TAIL ~ mandrels} 6 
{ HEAD ~ This drum wall } 5 has on the outside a plurality of plastic elevations such as { TAIL ~ mandrels } 6
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH