Key Ring,High Elastic MAX Wire Stretch 63CM Rope Security key chain, clasp,edc tool,Universal telescopic,spring type, Material: Stainless steel shell, all imports of steel wire rope (1.1mm diameter) outsourcing of high-strength resin material, laser technology LOGO. Jumbo high elastic winding spring. Anti-lost burglar fall retractable waist hanging keychain Key ring diameter of about 4CM, comes with a small key ring diameter of about 2CM The maximum length of the wire stretch 63CM EDC Outdoor Equipment High Quality Elastic Stretching Rope Keychain Anti-Theft Key Hanging Retractable Buckle Stainless steel spring, tested in excess of 100,000 retraction cycles