Partstock(TM) 5-Pack Heavy Duty Dual Key Ring Quick Release Detachable Pull-Apart Key 2 Split Rings Keychains Lock holder Key Accessory. Classic pull-apart keychains; all-steel construction with durable bright silver nickel finish Depress plunger for easy separation of keys from ring without removal Spring-loaded ball bearing coupling mechanism prevents accidental release Nickel plated tempered steel 1 inch (2.5 cm) split-rings return to original shape after expansion Package included: 5 pieces of Key ring holder