Wards Essentials Trebuchet Kit, Material: High quality precision-cut Birch verner pure bond plywood, Designed to be safe and robust, Dry firings and heavy projectiles are no problem, Holes are pre drilled, Medieval weapons, engineering, and physics, Beam arm: 21in
mBot-S Explorer Kits is an upgraded kit of the Makeblock star product mBot. It includes the original parts of the classic kit and further allows children to customize with its LED dot-matrix screen.
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