It is made of high quality aluminum alloy, lightweight, mini size. Smooth shiny polished finished, with no sharp edge on them. The spring loaded gate metal biner ensures quick link and locking. Spring-Loaded Closing Gate Makes it smoothly to open and close. Carabiners can be easily attached to pocket, snap clips, hooks, carrier, chains, and carry keys, water bottles, camping gear, lanterns, lights, keychains, key ring, rope, climbing utility, hunting accessories. Customized are available. Measuring 4.52*2.83 inches, this custom aluminum flat type carabiner keychain d shape buckle. Usage Scenarios: Office supplies, school stationery, corporate promotions, trade show giveaways. Customization available: Print your logo or customize packaging and color schemes. Product Highlights: Portable, durable, practical for daily use.