Specifications:This durable flexible shaft is quick to connect and easy to operate, which is the perfect addition for your rotary tool.The ergonomic handle is non-slip and comfortable to grip, ensuring high efficiency and stable performance.It is widely suitable for dust removing, fine carving, grinding, polishing, sanding, etc.Black Model:Item Name: M19*2 Thread Flexible ShaftMaterial: Alloy, SteelScrew Interface: M19*2Applicable Electric Grinder: for 17.5mm Thread Outer Diameter Electric GrinderFeature: Sturdy, Durable, Wide Application, Simple InstallationHandle Size: 0.3mm - 3.2mm/0.01" - 0.13" (Approx.)Total Length: 1m/39.37" (Approx.)White Model:Item Name: 6mm Chuck Flexible ShaftMaterial: Alloy, SteelApplicable Electric Grinder: for 6mm Shank Diameter Electric GrinderFeature: Lightweight, Convenient, Easy to Use, Perfect AccessoryHandle Size: 110mm x 20mm/4.33" x 0.79" (Approx.)Chuck Clamping Range: 0.3mm - 3.2mm/0.01" - 0.13" (Approx.)Chuck Thread: 8mm x 0.75mm/0.31" x 0.03" (Approx.)Total Length: 1m/39.37" (Approx.)Notes:It cannot be used for high-strength grinding and polishing, the blade diameter cannot exceed 8mm, and the machine must be adjusted to the lowest level.Due to the light and screen setting difference, the item 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Flexible Shaft (Others Not Included)