


Simple MachinesBuild all 5 Simple Machines at the same time! Students can construct, examine and explain simple machines to develop a deeper understanding of how they make work easier. A 5 in 1 value! Contains enough pieces to build a lever, pulley, inclined plane, wheel and axle, and wedge all at the same time. Modify machines with 4 included weights (two 5g and two 10 g) and 8 included rubber bands to explore effort, force, load, motion and distance. Labeled
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- Fast: 2-3 business days
- Express: 1-2 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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4.7 ★★★★★
Based on 458 reviews
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Product Reviews
★★★★★ 5
Great value
You get so many in the package. My dog gets one each night after dinner as a “tooth brushing”. He’s a big greyhound and these are thin and smallish, which is great for smaller dogs, but he loves them anyway.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026
★★★★★ 5
My dogs all time favorite treat!
My dog only likes these treats only! Goes after as soon as I open the package definitely recommend to anyone who has a picky eater for a dog and looking for something to give to them!
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Reviewed in the United States on April 13, 2026
★★★★★ 4
Dog loves these
One of my dog’s favorite treats! Consistency on each one varies from little to fully covered.
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Reviewed in the United States on May 20, 2026
★★★★★ 5
My dogs favorite
These are my dogs favourite treats at the end of the day. I used to buy the small packages, but im so glad i just discovered the large size. He waits all day for these and he'll even sit by the drawer theyre kept in throughout the day hoping to get one. They smell like real food (not strong though) and one of these lasts him at least 20-30 minutes. My dog is insanely picky when it comes to chewing sticks so im glad hes obsessed with these. He'll first chew off the chicken wrapping around the rawhide, then eat the full rawhide afterwards followed by a huge nap. They tire him out which is perfect because hes a huge chewer.
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Reviewed in the United States on March 20, 2026
★★★★★ 5
My dog loves these chews
My dog loves these! It gives her lots of satisfaction for chewing!
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Reviewed in the United States on May 18, 2026
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