Titanium Round Carabiner, Mirror Finish This carabiner opens and closes using titanium's unique spring-like resilience, not a traditional spring mechanism. Due to titanium's properties, this resilience will not diminish with use. Furthermore, titanium is a lightweight, strong metal that does not rust even when exposed to seawater. This keyholder, made from a material with such excellent physical properties, is a unique item that stands apart from keyholders made of other materials. The surface has a mirror finish. 【Dimensions】Carabiner Section: L - Outer Diameter 36mm / Weight 9g S