{HEAD ~ This upper mould half} also forms {TAIL ~ the spring well} and contains a removable core plug 
forms
{ HEAD ~ This upper mould half } also forms { TAIL ~ the spring well } and contains a removable core plug
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH