Kinetic Knob
By turning the Kinetic
Knob you cause a
sequence of gears to
work together to set this
Ball Machine into motion!
Each crank sends various
balls upward and
around the track!
OVER 170
EASY CONNECT
SNAP PIECES!
Build the Screwlift™ from
170+ VEX® Robotics Pieces!
This construction kit challenges you to not only
Build Your Brain™, but do so while constructing a
roller coaster style ball machine at the same time!
Once built, watch as the gears turn, the axles twist
and the balls roll as you turn the knob by hand...
or attach a motor kit to add power to this machine!
$29.99