Cute and small shaped keychain, brass material has both the texture of heavy metal, but also the literary retro style. The ruler key chain is laser-scaled, the handwriting is clear, and it is easy to read. The thickened brass material adopts stamping and forming surface fine drawing technology, which is smooth and burr-free, strong and durable, with good texture, convenient and practical, and not easy to break. The retro ruler keychain can be used as a measuring tool, key pendant, anti-lost card, etc., and the back is engraved, which can be personalized according to the requirements of the enterprise. Pure brass vintage ruler keychain has a unique style and durability, and giving as a gift can add to the uniqueness of the gift and the effect of spreading the corporate image.