Back in 2010, Apple signed an agreement with Caltech spinoff Liquidmetal Technologies, giving Apple exclusive access to the firm's unique metal alloys for consumer electronics applications. Liquidmetal's "amorphous metal alloys", sometimes referred to as "metallic glass" due to their non-crystalline molecular structures, offer several advantages over many other metals, including superior strength and durability. Apple had quietly tested Liquidmetal by using it in the SIM card eject tool for the iPhone 3G, but the material has yet to make any additional appearances in Apple's products. The agreement between Apple and Liquidmetal funneled the covered intellectual property through a subsidiary known as Crucible Intellectual Property,