Great for teaching about mechanics and conservation of energy - the plastic stepped pulley is fitted with a ball bearing on a single steel rod. It uses any standard right angle clamp to attach to a support stand.
Build a model green house and 9 other green energy-related devices with this great kit!
Build over 100 exciting electronic projects with this easy to use kit!
This SUPER Erector Construction set is one of the best you'll find anywhere!
Is it a demonstration of a scientific law or a work of art?
Use this temperature-controlled soldering station for a variety of soldering applications!
Build over 60 projects with this deluxe version of the Snap Rover kit!
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