Alnico magnets are composed of aluminum, nickel and cobalt, and they sometimes contain copper and/or titanium. They have a high magnetic strength and temperature stability, making them ideal for a variety of industrial and consumer applications. Alnico magnets are available for sale in the form of a button (holding) with a hole through it or a horseshoe magnet. The holding magnet is good for retrieving items from tight spaces, and the horseshoe magnet is the universal symbol for magnets around the world and works in a variety of applications.