Material: Tungsten steel, Shank diameter: 6mm, Drill head size: 10mm Convenient control, simple operation, safe and reliable, reduce labor intensity, improve the working environment Use: Processing all kinds of metals (including all kinds of hardened steels) and non-metals (such as marble, jade, bone). High quality: High efficiency, high-quality workmanship, long service life, good economic returns. Easy to operate, safe and reliable, can reduce labor intensity. Design: Chamfering, rounding, and grooving of mechanical parts. The double chamber is cross lines, not easy to block, more suitable for material objects with relatively low density.