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$16.90
per keychain
Mad Engineers Keychain
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Style
Aluminum Circle
+$4.45
+$4.45
+$21.65
+$21.65
About Keychains
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About This Design
Mad Engineers Keychain
Ever notice that most mad scientists are building things, making new inventions, and usually doing anything but basic research? That's because they aren't scientists, they are (dun dun dun) Mad Engineers! If you are, or know a Mad Engineer, they would love any item from the Mad Engineers collection at Cartesian Bear.
Customer Reviews
4.6 out of 5 stars rating5.6K Total Reviews
5,596 Reviews
Reviews for similar products
5.0 out of 5 stars rating
5 out of 5 stars ratingBy Ali Y.4 February 2026 • Verified Purchase
Metal Circle Keychain, 5.08 cm
Lovely & cute keychains i love them thank you sooo much ,they also reached to me soo fast 😍.
from zazzle.com (US)
5.0 out of 5 stars rating
5 out of 5 stars ratingBy T.29 May 2025 • Verified Purchase
Metal Circle Keychain, 5.08 cm
A huge big THANK YOU to the designer Little Linda Pinda. This was a special order and it turned out so lovely. Very happy. And the delivery was super quick too.
5.0 out of 5 stars rating
5 out of 5 stars ratingBy cindy t.8 November 2023 • Verified Purchase
Metal Circle Keychain, 5.08 cm
Zazzle Reviewer Program
Product quality is great, art work is perfect.
Would highly recommend.
Fast turn around, I was surprised they arrived so quickly, as I had a fairly large order. Perfect, centred and exactly what I wanted
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Product ID: 146201409653246221
Added on 26/12/11, 8:12 am
Rating: G