About This

Brain Teaser Puzzles - This puzzle set includes a Luban lock, ball Kongming, and corners Kongming, all smooth for brain games. They are durable and do not easily bend or break, even when thrown or stepped on. These brain teaser hand puzzles offer assembly and disentanglement challenges. Practice focus and concentration, use them as an IQ test challenge within a limited time, and enjoy the thinking and fun they bring.

Frequently Asked Questions

Everything you need to know about our educational toys and STEM products

How long does shipping take?

Shipping takes place within 3-5 business days. If there is a problem with the shipment of the product, we will notify you via the email address you entered when ordering.

Is free shipping available?

We do not currently offer free shipping. However, this may be added at some point. We apologize.

How can I get a tracking number for my order?

If your order has been shipped, we will add the tracking number to your order and notify you via the email address you entered when ordering.

How do I process a return or exchange?

For returns or exchanges, please contact us within 14 days of receiving the product, along with a receipt or screenshot of the purchase, and a photo of the product with the packaging or tag intact.