Feature:1. STABLE OPERATION: The shaft connector has high concentricity, the operation is stable and not easy to shake, with high safety.2. SIMPLE CONNECTION: The flexible shaft can be inserted into the electric grinding and fix the chuck, convenient in connection.3. EASY TO DISASSEMBLE: Insert the wrench into the socket and lock the drive shaft to loosen the chuck to replace the grinding head.4. CLAMPING RANGE: The maximum clamping range of the collet is 3.175mm (1/8in), and the clamping is firm and not easy to loosen.5. WIDE APPLICATION: Fits most tools like for most power tools, grinders, engravers, mini drills, polishing machines, etc.Specification:Item Type: Grinder Flexible ShaftMaterial: Rubber + ABS + Stainless SteelUses: Suitable for most tools, such as most for power tools, grinders, engraving machines, mini drills, polishing machines, etc.Collet Maximum Clamping Range: 3.175mm (1/8in)Connector Diameter: Approx. 3mm / 0.12inMaximum Load Speed: 8000-12000rpm Package List:1 x Flexible ShaftNote:It is forbidden to bend at acute and near angles, and try to bend naturally in a circular shape. The maximum radius of the bending of the flexible shaft spring shaft should not be less than 3.5CM. If the radius is smaller than this, it will exceed the spring rebound range. After the spring is deformed, it will seriously rub the tube wall and cause jitter and reduced service life.