High quality zinc alloy material, this puzzle toy is durable and has a long service life This lock and unlock puzzle toy is of fine workmanship and quality. exquisite surface, which will bring you a perfect gaming experience< /p> Retro creative lock design, super interesting, with historical culture and collection value Challenge your lock skills puzzle. You will find that children and adults play a variety of puzzle games The perfect gift for friends, family, colleagues and you, we offer the highest quality assurance