[Largely used] : Wide range of applications. Suitable for chamfering common machine parts. [Apply to]: Also suitable for chamfering and deburring precise and difficult chamfering parts. [Applications]: Suitable for aviation, automotive industry, electric valve, engine cylinder block, cylinder, ball, wall hole. [Apply to]: can finish taper surface processing Once. For a small cutting performance. [Unique Design]: Unique one-piece design can help efficient operation, can reduce blockage to delay labor. Item type: chamfering Material: tungsten steel Color: Plating Blue Size: approx. 6.3mm / 0.25 inch 8.3mm / 0.33 inch 10.4mm / 0.41 inch 12 , 4 mm / 0.49 inch 16.5 mm / 0.65 inch 20.5 mm / 0.81 inch Package list: 6 x chamfer cutters Note: This does not include other things, the color is based on the first picture, and other pictures only show the effect Due to the differences between different monitors, the picture may not reflect the actual color of the item. Due to manual measurement. Please allow deviation. Thank you!