[MATERIAL] Our cutters are made of solid hardened steel and C3 grit carbide. Grade C3 carbide is the highest grade used in the router bit industry. Precise product design creates smooth, detailed cuts suitable for all levels of complexity. [PERFECT DESIGN] Hardened steel body with anti-recoil design. Balancing tolerance of +/- 0.003 allows smooth operation at very high RPM. Features 3 C3 carbide tips. Micro-grain grade provides maximum strength and durability. [WIDE USE] Router tools can cut most wood-based materials including wood, MDF, particleboard, plywood, panels, softwood, and hardwood. Ideal for both professional and amateur use. [WHERE TO USE] Designed for use with laptop computers or desktop wood engraving machines, including portable and table-mounted CNC routers. Note: Not suitable for use in drills or electric drills. [SIZE] Shank Diameter: 1/4 inch (6.35mm) Tooth Width: 1/4 inch (6.35mm) Tooth Depth: 1/2 inch (12.7mm) [TRANSITION] 1cm = 10mm = 0.39 inches [SPECIFICATIONS] Material: Alloy blade, carbon steel handle Blade: Industrial grade micro-grain carbide Cutter: 600 grit CNC ground, mirror finish Balance: +/- 0.003 tolerance Body: Fully hardened steel [HOT REMINDER] 1. The blade is sharp. Handle with care and keep out of reach of children. 2. Size measurements are manually taken and may have a 0–3mm variation, which is considered normal. 3. Suitable for wood, MDF, particle board, and compact plywood. Avoid cutting ferrous metals and non-wood materials such as steel, iron, or sand.