The automatic yo-yo is here! Featuring Auto-Return Technology, Reflex™ automatically returns to the hand without having to tug the string! Utilizing a centrifugal clutch, Reflex returns automatically when it reaches the end of its spin. Reflex is a take-apart design featuring a high speed trans-axle for longer spin time, light-weight body, and a wide string gap that makes learning tricks easy! This model is perfect for beginners; Reflex is often referred to as a 'yo-yo with training wheels'!
See the solar system in action!
Easily assemble a working alarm motion detector!
Check out this high-quality gyroscope!
Provides the power to execute all the basic electrostatic demonstrations on an energetic and dramatic scale with up to 350,000 volts!
Build a magnetic levitating train with this science fair project kit!
This magic bird defies gravity before your very eyes!
At xUmp.com you will find a large selection of scientific products carefully curated by real scientists and educators. We sell everything from educational toys, teacher supplies for science classroom, lab equipment, science toys, science fair supplies, classroom equipment, chemistry glassware, chemistry lab equipment, physics demos, electronics supplies, robots, science kits to geeky science gifts.