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a metal or plastic ring or cap that fits around the end of a rod or tube to provide reinforcement, protection or to allow it to be attached to a handle
What is a "ferrule"?
A ferrule is a small metal or plastic band used to hold things together. For example, ferrules secure the bristles or hairs of tools like paintbrushes, pencils, and makeup brushes and attach them to their handles. They keep the bristles in place and help maintain the tool's shape during use. Ferrules are also used in various other items, such as umbrellas, where they hold the metal supports to the main pole, and in mechanical applications, where they provide extra strength and connection points. Ferrules come in different shapes and sizes, depending on their specific function and the tool they are used with.
