Size: applicable to 1/4 (6.35mm) handle manual drill and vertical motor driven drill. Length of cutting diameter: 7.93/9.52/112.7 mm. Usage: These 1/4 handle cutters are suitable for solid wood panel, MDF, chipboard, design profile, smooth and thorough cutting and production of fashionable furniture. They are also useful for milling grooves on frames, panels, clocks, towers, and other wall tools to create keyhole hangers or grooves for cables. Features: The cemented carbide blade has high quality welding, which can provide stable quality and high efficiency without worrying about fracture and inclination during the working process. The blade is sharp and durable, with arc curve design, which is conducive to pulling out and stamping more effectively. List: Package contents: 1 x T-slot milling cutter for 1/2 "hex screw; 1 x T-slot milling cutter for 3/8" hex screw; 1 x T-slot milling cutter for 5/16 hex head screws. Product Description: T-slot milling cutter used for milling T-slot, applicable to metric hexagon screws or slotted nuts. Various specifications and patterns to meet your DIY dream. The cutting tool selects a blade larger than the working object. Wear safety glasses during operation. Sold by Briday Store