Stem Explorations- Rollercoaster Building Set, includes over 500 parts plus a battery-powered motor for a single child or team of 2-3 children to build a working Roller Coaster, plus 2 additional models: Ramp and a Half-Pipe, downloadable booklet guide
Plastic Pulley, Single, One (1) High Quality, Single Wheeled Plastic Pulley, On A Steel Frame, With Hooks At Each End And One Plastic Pulley With A Diameter Of 50 mm, Inner Gap Of Pulley Measures 4 mm, Overall Length Is 8.9 Cm. Capable Of Holding Over 30 Lbs Of Weight.
Pulleys Plastic, Double-Long, Double Plastic Pulley In Tandem, On A Steel Frame, With Hooks At Each End Carrying Two Plastic Pulleys With Diameters Of 38 And 50 mm, Inner Gap Of Pulley Measures 3 mm, Overall Length Is 11.4 Cm. Capable Of Holding Over 30 Lbs Of Weight.
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