A money clip is a device typically used to store cash and/or credit cards in a very compact fashion for those who do not wish to carry a wallet.
Metal money clip
A metal money clip is generally a solid piece of metal folded into half, such that the bills and credit cards are securely wedged in between the two pieces of metal. Metal money clips are typically made out of stainless steel, silver, gold, titanium, or platinum. They are typically sold as luxury items. The chief disadvantage of a metal money clip is that, due to the inflexibility of the metal, it cannot typically hold large amounts of cash. Depending on the design, it may also be difficult to push the bills into the clip. Money clips fabricated from titanium can to a great degree overcome these technical limitations that many metals have. This is due to the greater flexibility of the titanium. The flexibility allows for greater capacity (without stretching out)and also requires less “spring tension” in the closed position. Titanium also has excellent resistance to cracking and fatigue and does not wear out or fatigue like many types of metal money clips can over time.