The beads 21 are preferably commercial stock plastic beads of {TAIL ~ the type} commonly available for {HEAD ~ plastic injection molding} of commercial plastic parts 
The beads 21 are preferably commercial stock plastic beads of { TAIL ~ the type } commonly available for { HEAD ~ plastic injection molding } of commercial plastic parts
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH