An extension of the noteworthy ZOOB line, these build-specific kits create a series of operational construction buildings and vehicles. Beyond the many standard ZOOB pieces included in each set are custom pieces such as wheels, treads, axels, tow lines, and more to create each kit's builds. These advanced pieces allow the completed ZOOBs to operate as expected - the Lift N' Loader can raise and lower its buckets, the Sky Crane lifts objects, and the Scorpion Driller rolls on treads and can raise or lower its drill. Each kit comes with instructions for four total builds. Alternately, kits can be combined with other ZOOBs or used separately to create unique, custom builds apart from the specified designs.