SIZESuitable for 5/16 (8mm) shank hand drill bits, stand motor drive drill bits. cutting diameter length: 7.93/9.52/12.7mm. MATERIALThis product uses YG6 hard alloy with sharp edge, high hardness, precise positioning, smooth cutting and impact resistance. APPLICATIONThese 1/4 shank router bits are suitable for solid wood, MDF, chipboard, design profiles, for smooth and thorough cuts as well as for the production of stylish furniture. They are also suitable for milling grooves on frames, panels, clocks, towers and other wall tools to create keyhole hangers or to create grooves for cables. 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. 1/2" hex screws; 1 x T-slot cutter for 3/8" hex screws; 1 x T-Slot Cutter for 5/16 Hex Screws. SPECIFICATIONS: Length: 46mm Material: YG6X Carbide Bit Diameter shank: 12.7mm, 9.52mm, 7.93mm 1 x T-slot cutting tip for 5/16" hex screw 1 x cutting tip T-slot cutting edge for 3/8" hex screw 1 x T-slot cutting point for 1/2" hex screw Hard carbide cutting edges (carbide YG6X). With a clean cut, even rotation, resistance to twisting and resistance. Precisely ground shank for a stable hold in the clamp. Smooth rotation, good wear resistance and long service life. Coated milling bodies provide better chip evacuation and reduced friction. Diameter shaft diameter: 6.35/8mm, suitable for most brands of machines with 6.35/8mm shaft support.