Keys are made up of various sorts of metal.
Door keys are made from nickel plated brass. Some luggage and briefcase lock keys are made from aluminum.
Metal door locks are made of metal.
Metal
Most keys are made from brass and steel, depending on what color they are. This includes house and car keys.
The metal in a fridge door is made from sheet metal. The sheet metal is either clinched or welded together.
A clarinet can be made out of wood or plastic and the keys are metal.
Nowadays, they are generally made of die cast metal.
doorknobs can be made out of metal, gold, or copper
The keys of the clarinet can either be made from nickel or silver.
Kettles, Teapots, Tins, Saucepans, Money, Speaker, Computer, Door handle, Boiler, Heater, Printer, Fridge, Keys.
The base is made of wood most times. The keys are metal!
Depends on the lock, but mostly metal and iron.