Simple Machines

Marsoni

M251S

$264.50

Get it in 3 business days with 1 day shipping. Friday, May 29

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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I have bull terriers. They chew wood for fun... But this brand in the appropiate size and in any shape has been the best thing for them! They last for a very long time (they have not even dented them and they've had one (another shape) for the last two years. Now I bought these bones so that they can play together, each graving one side of it. They have so much fun! They are worth every penny.

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Reviewed in the United States on March 19, 2026

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tammi pasquale

Dallas, US

★★★★★ 5

Best chew toy

Size: Medium (Pack of 1)

Kong toys are the best. They hold up through the heavy chewing stage. Definitely recommend if you have a heavy chewer.

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Reviewed in the United States on May 28, 2026

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Erica

Waukegan, US

★★★★★ 5

Not for aggressive chewers

Size: Medium (Pack of 1)

My dog absolutely loved this Kong Goodie Bone at first and was super excited about it. Unfortunately, it didn’t hold up nearly as long as I expected. Within just a few hours she had already torn pieces off of it, and I ended up finding little red rubber pieces all over the house. I wouldn’t recommend this for aggressive chewers at all. It may work better for lighter chewers or dogs that are gentler with toys, but mine destroyed it way too quickly. Disappointing because she really did enjoy it while it lasted.

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Reviewed in the United States on May 24, 2026

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Sheri Bealer

West Palm Beach, US

★★★★★ 4

Very sturdy for good chewers

Size: Medium (Pack of 1)

My dog loves this. Shes a boxer Old English Bulldog mix and she’s a hard chewer. We put Kong treats in here when we leave and she’s on it in no time

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Reviewed in the United States on December 18, 2025

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LilFrog

Grantham, US

★★★★★ 5

Nice

Size: X Large

My dog loves it! Very durable bright color looks sturdy a little pricey but worth it

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Reviewed in the United States on June 8, 2026