Schiebeschloss is a lock that requires no key to open. The name translates as ‘sliding lock’ and that is what you need to do, slide the pegs around in the correct way.
Made by Jean Claude Constantin this is available in a wooden and metal version, this is the metal version which does also have some wooden components internally.
The lock measures 123 x 84 x 20mm.
Please note this puzzle comes packaged in a simple plastic bag and does not include the solution.