Check the listing for details. Alpha Lock Brain Teaser Wooden Puzzle. Condition: New. Listed at 47.95 USD. Alpha Lock Brain Teaser Wooden Puzzle Product Description: An intriguing wooden lock that needs no key to open. To solve the puzzle, and open the lock you will need to move the slider horizontally, while placing the balls in the right spot, and pull the platform so you can open it. There are some metal balls and sliding pieces that need to move around in order to open it. Invented by the prolific puzzle designer Jean Claude Constantin. Approximate Diamentions: 5.5" x 3.75" x 0.75" Difficulty Level (1-5): 4 Hard Solution Is Not Available at this time. Return Policy Merchandise may be returned for a full refund excluding shipping charges. Merchandise must be returned in its original packaging and in unused and sealed condition and packed sufficiently to avoid being damaged in shipping. Please contact us for a Return Authorization number (RMA number)and return instructions, before returning the merchandise. Shipping Policy We can combine items for discounted shipping, please make sure you are purchasing all items on the same cart and send us a request for total, we'll combine the product price and shipping cost. Payment Policy We accept PayPal payment. Orders will be shipped once payment is received.