More info A helix-shaped wire with turned end-caps. Simply pull off the knurled side to add or remove keys. A daily, tiny joy. Specifications Thanks to your feedback, we've updated the Closed Helix Keyring design to primarily feature a pull-off mechanism, though some earlier models may still have a twist-off design. 1/8" wire Brass, Stainless Steel, Vapor Black PVD on Stainless Steel 2" x 1.25" x 0.2" 1.6 oz CALIFORNIA WARNING : This product can expose you to lead, a chemical which is known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to: www.P65Warnings.ca.gov