BIT OF BRONZE is an alloy made up of copper and TIN. It is a durable material that has been used for centuries in the production of tools, weapons, and other objects. The term BIT OF BRONZE is derived from the fact that it is composed of two metals, copper and TIN, which are both relatively soft metals. TIN, which is represented by the 3 letter answer TIN, is the main component of the alloy, making up about 90% of the total composition.