Specification: Item Type: 6mm Drill Chuck Flexible Shaft Material: Stainless steel Applicable for: electric grinder with three-jaw chuck, electric drill. Packing: opp bag Length of the flexible shaft: 1.05m / 41.3 inch Size of the chuck thread: 8*0.75 mm Input clamping shaft diameter: 6mm Output clamping can be replaced: 3.2mm (maximum), the flexible shaft comes with a 3.0mm core Package list: 1 * Flexible Shaft Note: 1. Please allow 0-1 inch error due to manual measurement. Thanks for your understanding. 2. When connecting the machine and before the machine is turned on, always hold the handle of the flexible shaft, otherwise the flexible shaft may be violently shaken and may cause injury. 3. Do not bend the hose unduly. 4. The flexible shaft is a detail polisher, the diameter of the grinding head or the blade should not exceed 8mm, and the machine should be used in the lowest level.