7.1 cm x 4.8 cm x 10.7 cm / 2.8 in x 1.9 in x 4.2 in
This 3D printed puzzle was designed by the prolific burr puzzle creator Christoph Lohe. It is being sold with his permission and he will receive a percentage of the sales. This puzzle is a good sized 3D print.
The Spiral Lock is a burr padlock without a key. The L-shaped inner pieces create a nice spiral. Burrtools level 21.