Overall length: 55-69mm, shank: 3mm, tip outer diameter: 6mm, blade length: 8-25mm. High quality: made of tungsten carbide High quality heat treated, ensuring its hardness can reach HRC70. Versatile tools: perfect for detail work, widely used for metal working, woodworking, model making engineering, wood carving, jewelry making, welding, chamfering, molding, deburring, grinding, etc. Easy to use: can generally be used with electric or pneumatic tools of pocket (can also be used in the machine tool, and the speed of electric / pneumatic tools generally about 6000-50000 rpm. Product specifications: Material: carbide of tungsten. Cutting diameter: 6 mm. Shank diameter: 3 mm. Contents: 1 set of 10 rotary cutters. Note : it does not include other things, the color is based on the first picture, and other pictures only show the effect Due to the difference between different monitors, the picture may not not reflect the actual color of the item. Due to manual measurement. Please allow deviation. Thank you! Welcome to meet