Construct a cool metal detecting robot you can control by remote! Learn the principles behind how your robot works. The detector can be detached from the robot to use and carry on a handy key chain too. This educational and fun kit includes all the parts.
from Google Alert - metal detectorhttps://www.google.com/url?rct=j&sa=t&url=https://www.whistle-stop.com/review/product/list/id/15619/category/180/&ct=ga&cd=CAIyGjBmN2Y1NDMwZGU1NzA5Mzc6Y29tOmVuOlVT&usg=AFQjCNH5yxcTnnzoIs6off-6EndahNQ9OA
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