(Slotting Cutter Tool Size) Suitable for 5/16 (8mm) shank hand drills, stand motor driven drills. Cutting Diameter Length: 7.93 / 9.52 / 12.7mm. (Milling Shank End Mill) High quality T-type straight edge blade, sharp edge, high hardness, accurate positioning, high precision, smooth cutting. (Efficient Cutting) High quality YG6 carbide blade with sharp edge, high hardness, accurate position, high precision, smooth cutting, impact resistance, high toughness and not easy to break. (Excellent Design) These 5/16 shank router bits are suitable for solid wood panels, MDF, chipboard, designer profiles, for smooth and detailed cutting as well as for the production of stylish furniture. Also suitable for milling grooves on frames, signs, clocks, pylons and other wall tools to create keyhole hangers or cable grooves. (Application) Used for solid wood, waterproofing board, plywood and ecological board. Ideal for milling recesses in frames to create keyhole hangers or for making recesses for