SIZESuitable for 1/4 (6.35mm) shank hand drills, stand motor drive drill bits. cutting diameter length: 7.93/9.52/12.7mm. MATERIAL This product uses yg6 hard alloy with sharp edge, high hardness, precise positioning ,smooth cutting and impact resistance. APPLICATIONThese 5/16 Shank Cutters are suitable for solid wood, MDF, particle board, design profiles, for smooth cuts and meticulous as well as for the production of stylish furniture. They are also suitable for milling grooves on frames, panels, clocks, pylons and other wall tools to create keyhole hangers or to create grooves for cables. &nbsp ;FEATURES The hard alloy blade has high-quality welding to provide stable quality and high efficiency, without worrying about broken and sloping problems during your work. The blade is sharp and durable, adopts arc curve design, advantageous to pull out, punching is more efficient. Our products are made with the highest quality materials and are designed to provide you with the best possible user experience. We strive to ship out all orders within three days of purchase, and the estimated delivery time is 8-37401 days. When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specifications We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please don't hesitate to contact us. We are here to help and will do our best to assist you. Thank you for choosing our product. We hope you enjoy it!