KeyUnity KM04 Titanium Carabiner Keychain Clip, Quick Release, EDC Key Holder Organizer with Key Ring Weight Key Clip: g Inner Diameter Key Ring: mm Outer Diameter Key Ring: mm Wire Diameter Key Ring: mm Weight Key Ring: g PRODUCT FEATURES 1. Well made. CNC machined from Ti-6Al 4V titanium alloy, outer surface treated with sandblasting stone washing process, make this keychain light and strong. 2. Ingenious design. Take advantage of the toughness of Ti and the spring is one-piece molded by wire cutting technology to make this keychain more durable.