Safecracker 40 | Wooden Math Logic Puzzle






Safecracker 40 is a one-piece, handcrafted wooden math and logic brain teaser for teens and adults. Made from maple with a cherry finish, it delivers a repeatable challenge in a pocketable form.
Goal: Align the wheels so each of the 16 columns equals 40 at the same time.
Size: 4.4 x 4.4 x 0.75 in. Deep laser engraved numbers and text will not fade. Add personalized engraving on the back.
Difficulty: Intermediate. Ideal for solo puzzling, travel, and quick office breaks. Handmade in the USA; see more challenges in the Math Puzzles collection.
Ready to check out
Review the selected option and total at checkout.
Delivery to you
Allow time for the store to prepare your order before transit begins.
Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.
Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.
View policyTalking through a refund
Send the store your order number and the reason for your request.
Please contact us for the refund processing timeframe before returning an item.
View policyYour shipping options
Choose from the delivery options available for your address.
Standard Shipping · United States: $0.00
Express Shipping · United States: $3.99
View policyBefore you return a product
Check the conditions for your product before sending it back.
United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.
View policy