A Brass Adjustable Ferrule typically refers to a component that is part of certain tools or objects. A ferrule is a ring or cap, often made of metal, used to secure or reinforce the end of a handle, tube, or joint. Brass, a metal alloy made primarily of copper and zinc, is commonly chosen for its durability and corrosion resistance. Moreover, the offered Brass Adjustable Ferrule is also used in some art and craft tools, such as paintbrushes with telescopic handles. The adjustable ferrule allows artists to extend or retract the handle as needed.