Currently, the KNEX rod and connector systems are marketed in two size categories, a “standard” size, directed to both children and {TAIL ~ adults}, and a larger size, directed more to younger, smaller children, which has larger and softer components, both rods and {HEAD ~ connectors} 
Currently , the KNEX rod and connector systems are marketed in two size categories , a “ standard ” size , directed to both children and { TAIL ~ adults } , and a larger size , directed more to younger , smaller children , which has larger and softer components , both rods and { HEAD ~ connectors }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD