This 52in. long flex shaft lets you work in tight areas where a drill just won't reach. Features pre-lubricated and sealed ball bearings, a 1/4in. arbor end which attaches to your drill or drill press, and a 5/16in. chuck. Each end also has a strain relief sleeve to prevent kinking. Operates best between 800 and 2,500 rpm. Use only with 4in. diameter or smaller buffs. Avoid tight radius bends to maximize shaft life. Made in Germany.