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Sale Price $8.96.  
Original Price $11.20 Comp. value
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Pi Keychain

4.6 out of 5 stars rating
5410 Total Reviews |
by
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Style
Aluminum Circle
+$2.90
+$2.90
+$14.30
+$14.30

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About Keychains

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Keychain
Create your own from scratch

Style: Metal Circle Keychain

Keep your keys safe and spectacular with this sturdy aluminum keychain from Zazzle. Beautifully printed on both sides, you can choose from thousands of designs, or personalize it with your own photos, text or unique designs. Label your car keys or keep a family photo of loved ones close to you at all times, these personalized keychains are light and waterproof.

  • Dimensions:
    • Diameter: 2"
    • Depth: 0.045"
    • Weight: 0.05 oz.
  • Full-color, full-bleed printing
  • Silver colored metal key ring with plastic snap ring
  • Light and waterproof
Designer Tip: To ensure the highest quality print, please note that this product’s customizable design area measures 2” in diameter. For best results please add 1/16" bleed

About This Design

Pi Keychain

Pi Keychain

Love mathematics? Love pi! The Greek letter pi, defined as 3.141 (approximately) and terribly useful for working out the area of a circle. A top geeky t-shirt for lovers of maths.
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Customer Reviews

4.6 out of 5 stars rating5.4K Total Reviews
4195 total 5-star reviews782 total 4-star reviews215 total 3-star reviews116 total 2-star reviews102 total 1-star reviews
5,410 Reviews
Reviews for similar products
5 out of 5 stars rating
By Ali Y.February 4, 2026 • Verified Purchase
Aluminum Circle, 2"
Lovely & cute keychains i love them thank you sooo much ,they also reached to me soo fast 😍.
5 out of 5 stars rating
By linda f.June 18, 2025 • Verified Purchase
Premium Round, Small (1.44")
So cute and this is perfect!!!
5 out of 5 stars rating
By AnonymousSeptember 22, 2025 • Verified Purchase
Aluminum Circle, 2"
I went on vacation and family and friends want me to get them a key chain I was already returning home so I got it from zazzle there happy!!

Tags

Keychains
3 141greek lettersmathematicsmathmathsmathematical symbolsgeekgeekymaths geekschool
All Products
3 141greek lettersmathematicsmathmathsmathematical symbolsgeekgeekymaths geekschool

Other Info

Product ID: 146848591017848970
Created on: 5/14/2009, 11:04 AM
Rating: G