There are several sword makers that produce "Kill Bill" replica swords, including Masahiro, Musashi and Hanzo Swords. The "Kill Bill" swords are produced in a variety materials and price points from inexpensive plastic and stainless-steel replicas to more-expensive, functional cutting swords made of carbon steel.
The "Kill Bill" swords are katanas. Many of these swords are designed to be display pieces and do not function in the way that a real katana would, even though they are full-sized at approximately 42 inches long with a 29-inch blade. In the film, these swords were created by master sword maker Hattori Hanzo. There is no relation between the historical and fictional Hanzo and Hanzo Swords.