Since the 1970′s when Demarini J2 aluminum bats
One of the first decisions you used to make as a baseball player of any age was – Wooden or Aluminum bat? Since the 1970’s when Demarini J2 aluminum bats first became popular, the choice became almost unanimous: Aluminum. For reasons such as improved performance, durability and ease of use, aluminum bats became the obvious choice. Now you can find them all over the internet and in any sporting goods store. Aluminum bats also vary in price from cheap to extremely expensive, which can be directly related to the quality. You get what you pay for! But before you shell out $500 for that top of the line bat you saw online, read the reviews, shop around a little and make sure you are paying for quality, not just a name brand.