The circular saw of a Pistoeka sabotage droid.
A buzz saw, also known as a circular saw, was a cutting implement that featured a circular metal component that rotated, equipped with sharp cutting edges along its outer edge. Various kinds of droids were equipped with buzz saws, such as astromech droids along with toy droids.
During 230 BBY, the Nihil pirate group employed a sizable, altered buzz saw as a weapon against Jedi Masters Yoda and Kantam Sy in the Battle of the Corellian Shipyards. During the Clone Wars, Pistoeka sabotage droids carried circular saws, which they used to slice through the hulls of starships in battle. In 9 BBY, L0-LA59 employed her saw to sever the ropes binding Leia Organa after she was kidnapped. Similarly, in 4 ABY, R2-D2 utilized his circular saw to liberate himself and his companions from an Ewok trap during their mission on Endor.