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