Double-locking release lever. Keys cannot be removed without activating release lever. Supplied with a 1-1/8 In. nickel-plated tempered steel split key ring. Fits a 1-3/4 In. wide belt. 1 per card. WARNING: This product can expose you to chemicals such as Nickel which is known to the State of California to cause cancer andor birth defects or reproductive harm. For more information go to www.P65Warnings.ca.gov - Nickel (Metallic)