Features: brand new and high quality High-quality materials: made of high-quality zinc alloy, durable. Vernier caliper for key ring: unique and practical, making you fashionable and eye-catching. Measurement: Can be used for measurement with low accuracy. For precise measurement, you can choose a professional vernier caliper. Multi-purpose: can be used as a good keychain, car keychain or handbag decoration. Portable: small and light design, easy to carry and put in the pocket, can be carried anywhere. Special gift: This beautiful for key chain shows your romance and loyalty to the person you give it to. Specifications: Material: Zinc Alloy Weight: 12g Size: 2.2x5cm/0.86x1.97inch Keyring Diameter: 3cm/1.18inch Color: Gold/Silver Package Includes: 1x Mini Vernier Caliper Keychain note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.