Feature: 1. Shaft Adapter: With high concentricity, the flexible shaft adapter enables easy and stable operation for accurate carving. 2. Reliable Work: Comes with 8000‑12000rpm maximum load speed, the drilling extension cable ensures higher working efficiency. 3. Firm Clamping: 0.3‑3mm chuck clamping range can freely match grinder heads with various size, which is firm and reliable. 4. Practical Use: Allows for application on lots of rotating tools, such as for dremel power tools, electric drills and so on. 5. Easy Connection: A wrench is also included in the set, bringing more convenience to the assembly as well as disassembly. Specification: Item Type: Flexible Shaft Adapter Material: Rubber + ABS Application: Suitable for most rotating tools, such as most for dremel power tools, electric drills, etc. Chuck Clamping Range: Approx. 0.3 ~ 3mm / 0.01 ~ 0.12in Joint Diameter: Approx. 3mm / 0.12in Maximum Load Speed of Flexible Drive Shaft: 8000-12000rpm Package List: 1 x Flexible Shaft Adapter 1 x Wrench Note: It is forbidden to bend at acute and near angles. Try to bend naturally. The maximum radius of the flexible shaft spring axes shall not be less than 3.5CM. If the radius is smaller than this radius, the spring rebound range will be exceeded. After the spring is deformed, it will seriously rub against the tube wall and cause jitter, and reduce the service life.