A wire brush is a tool, consisting of a handle, usually wood or plastic, occasionally bone, and a brush. The brush is usually made from a large number of steel wire bristles. The steel used is generally a high carbon variety and very hard. Other wire brushes feature bristles made from brass or stainless steel, depending on application. Wires in a wire brush can be held together by epoxy, staples, or in some cases one continuous wire. Some types of wire brushes can also be used on an angle grinder or electric drill.

The wire brush is primarily an abrasive implement, used for cleaning rust and removing paint. It is also used to clean surfaces and to create a better conductive area for attaching electrical connections, such as those between car battery posts and their connectors, should they accumulate a build-up of grime and dirt. When cleaning stainless steel, it is advisable to use a stainless steel bristle wire brush, as a plain carbon steel brush can contaminate the stainless steel and cause rust spots to appear. Brass bristle brushes are used on softer surfaces or in potentially flammable environments where non-sparking tools are required. Wire brushes are also used to clean the teeth of large animals, such as crocodiles and pigs.

Gene Krupa (January 15, 1909 – October 16, 1973) was an American jazz and big band drummer and composer, known for his highly energetic and flamboyant style.

Eugene Bertram Krupa was born in Chicago, the youngest of Anna (Oslowski) and Bartłomiej Krupa's nine children. Krupa's father, Bartłomiej, was an immigrant from Poland, and his mother, Anna, was born in Shamokin, Pennsylvania. His parents were very religious and had groomed Gene for the priesthood. He spent his grammar school days at various parochial schools and upon graduation, attended St Joseph's College for a year, but later decided it was not his vocation. He studied with Sanford A. Moeller and began playing professionally in the mid 1920s with bands in Wisconsin. He broke into the Chicago scene in 1927, when he was picked by MCA to become a member of "Thelma Terry and Her Playboys," the first notable American Jazz band (outside of all-girl bands) to be led by a female musician. The Playboys were the house band at The Golden Pumpkin nightclub in Chicago and also toured extensively throughout the eastern and central United States.^{[citation needed]}