Here is our new Carabiner series, takes a special design which is originated from wings of butterfly. CNC Milled from Grade 5 titanium without molding, welding or any special appearance treatment to cover up blemishes from machining. It is specifically designed for everyday use. One moving part without complex mechanism or useless function – easy snap on and quick release by pushing spring. It won’t broken, stuck or fall apart which would keep your key safe and sound. Three size for meeting the needs of different groups. (Manganese steel spring are applied for elastic open-close function, the same with former design TI-TKG-01) Dimension Titanium Wings Carabiner Length: 2.07'' (52.58mm) Width : 1.06" (26.9mm) N.W. : 0.24oz (6.84g) Titanium Wings Carabiner(M) Length: 1.68'' (42.70mm) Width : 0.86" (21.85mm) N.W. : 0.15oz (4.43g) Titanium Wings Carabiner(S) Length: 1.37" (34.85mm) Width : 0.69" (17.63mm) N.W. : 0.1oz (3.07g)