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Ships within 48 hours · Estimated delivery Sep 9 - Sep 14
UPC: 765023067057
Dog Cleanup
Debuting in our top performing apparel
the tactical work boots are built for long-lasting strength
fine motor skills and dexterityHeight: 3
Simple Machines Block & Tackle 3% plastic UPC: 765023067057MPN: 005646 UPC: 895452001480 One pulley can be used to change the direction of the force applied by a cord several pulleys can be used to make this simple machine. A small force on the cord can be used to lift a large weight. Experimenting with the device shows why: lifting the block by a short distance requires that the cord be pulled a long distance. This classic wooden model offers children a basic concept of the laws of physics. Desktop sized.
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