Usage Tips:SIZESuitable for 5/16 (8mm) shank hand drill bits, 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 1/4 shank router bits are suitable for solid wood, MDF, chipboard, 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. ;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. T for 1/2" hex screws; 1 x T-slot cutter for 3/8" hex screws; 1 x T-slot cutter for 5/16 hex screws. T-slot cutter for milling T-slots, suitable for metric hex screws or nuts slotted. A variety of specifications and patterns for different cutting needs to fulfill your DIY dreams. TECHNICAL SPECIFICATIONS: Length: 46mm Material: YG6X Carbide Shank Diameter: 12.7mm, 9.52mm, 7.93mm 1 x T-slot cutting point for 5/16" hex screw 1 x T-slot cutting point for 3/8" hex screw 1 x T-slot cutting point for 1/2" hex screw Hard carbide (YG6X carbide) cutting edges. < p > With a clean cut, even rotation, torsional resistance and resistance. Precisely ground shank for a stable hold in the pliers. Smooth rotation, good resistance wear and long life. Coating of milling bodies provides better chip evacuation and reduced friction. Shaft diameter: 6.35 / 8mm, suitable for most brands of machines with 6.35/8mm shaft support. Crushers made from YG6X are more durable and sharper than most other grinders made from YG8: compared to YG8, the grinding speed is doubled and the durability is extended. Installation guide: It is important to use the normal case dimensions. The tool should be fully inserted into the case and firmly tightened. Apply clamping force during the cutting process and partially insert it into the housing, otherwise the tool shank will be damaged. How to use: 1. The temperature of the material becomes very high and even smoke is produced during long periods of operation. Please always note that the refrigerant must be topped up during operation. 2. Replace the device with a one to avoid the cutter breakage or injury accident if the woodwork of the router is dull. 3. Please use the cutting tool to select the blade larger than the work object. 4. Wear safety glasses during operation.