Skip to main content

Shopping Cart

Your cart is currently empty.

Reached main content
Calvin's Full-Function Crazy Tetrahedron (Center-Locking) - Black
Calvin's Full-Function Crazy Tetrahedron (Center-Locking) - Black

Calvin's Full-Function Crazy Tetrahedron (Center-Locking)

Calvin's Puzzle

  • $21.99 USD

Black

Black

Product Description

The Full-Function Crazy Tetrahedron is a 4 sided puzzle from Calvin. It has circles in the center of each face that do not turn with the face. If you like tricky puzzles, this one is right up your alley.

Easy Returns!

Not completely satisfied with this product? We accept returns within 4 weeks (28 days) past the delivery date, for either store credit, or a full refund to the payment method — the choice is yours.

Click to see exclusions and more details on our returns policy

Our Promise to You

All of our products are guaranteed to be free of defects, or we will replace and reship at no cost to you. Please contact us within 4 weeks (28 days) past the delivery date to report any issues with items you have purchased.

Please note that some new cubes when being used for the first few times may experience what is termed a "pop". This is when one or more parts of a puzzle pop out without any damage actually being done to any of the pieces. This also occurs from time to time during normal usage. Pops are typically not considered a defect if the parts which come off can be reassembled by hand.

The corners on 2x2 puzzles should not be twisted as doing so may snap the piece. Damage caused by corner twisting is not considered to be a defect.

Fast & Free Shipping Available!

  • Free standard U.S. shipping (includes Hawaii, Alaska, and AFO/APO) (2-5 business days) is offered for orders with a subtotal of $55.00+. Free expedited shipping (1-3 business days) is offered at $85.00+.
  • All orders are shipped from our New York warehouse.
  • Orders are shipped the same business day they are placed, or the next business day. The cutoff for same day shipping is 3PM EST.
  • There is no processing/handling surcharge — all our shipping rates are at rock-bottom.
For our customers outside the U.S.:
  • We ship to all countries not sanctioned by the U.S. government.
  • We advise that you look into your country's customs laws before ordering.

Click to learn more about our shipping methods

Product Specifications
Manufacturer Calvin's Puzzle
Type Shape Mods
Added 2022-05-05
Gross Weight 108g
Item Weight 88.0g

Customer Reviews

Based on 2 reviews
0%
(0)
50%
(1)
0%
(0)
0%
(0)
50%
(1)
J
J.T. (United States)
To even the score

Despite there being less expensive alternatives to this puzzle mechanism, I appreciate the design of this particular puzzle: black with stickers and little clip art locks. Also, Calvin's is a classic puzzle manufacturer. Does its job & looks good : )

S
Stevie (United States)
Copy

This is just a more expensive version of a shengshou puzzle