Collets

Collets are specialized sleeve bushings that hold small-diameter tool shanks or workpieces in collet chucks or machine spindles. They maintain a solid grip on the tools and workpieces during machining to prevent them from wobbling or loosening. To improve cutting precision and concentricity, they also center the tools and workpieces. Milling machines, lathes, grinders, and other machine tools all employ collets.