A flail is a contact flexible-jointed cold weapon of impact-crushing action. It is an impact weight (bone, metal or stone striking head) connected by a flexible suspension (chain, belt or strong rope) with a handle (mainly wooden) — a haft. Due to their cheapness and effectiveness, flails were widely used in the 10th–17th centuries in Eurasia as infantry and cavalry weapons. Later they were used on a limited scale.
The flail presented in the museum’s collection is an iron conical sleeve for attaching a flail handle, with a ring at the end, to which a three-part 8-shaped chain with a star-shaped ball at the end is secured.
The Russian name of the weapon “kisten”, according to one version, came from the word “kist” (wrist). A wrist was the place where the loop was put during the battle. According to another version, the word “kisten” has Turkic roots and literally means “club.”
Flails were often made of cheap materials (wood,
bone), which made them widely available. It is not surprising that in popular
culture the flail is often perceived as a weapon of robbers. From the Great
Russian Encyclopedia,

