The blade is subjected to high-frequency welding technology, and the cutter body is made of super-hard tungsten steel, with high hardness, strength and sharpness. A technology of complex process improves wear resistance and greatly increases service life. Unique design, super hardness and impact resistance ensure the sharpness of the blade, your first choice in quality . Industrial quality bits. Hardened steel body with anti-recoil. Heat and construction resistant Teflon coating. Suitable for wood, MDF, chipboard, plywood compact board; Please avoid cutting ferrous metals and other materials such as steel, iron, sand, etc. Specification: Material Body: High quality YG6X primary alloy. Blade material: Industrial micrograin carbide. Shank diameter: 8mm. Tooth width: 1/4" (6.35mm). Tooth depth: 1/2" (12.7mm). Applicable to board size: 13-19mm. Maximum speed: 12000 Suitable for all types of trimming or engraving machines. Suitable for wood, MDF, chipboard, plywood compact board and so on. Package includes: 2 x router bits 0.1-0.3 inch size difference is due to manual measurement within the normal range. Color may differ slightly due to lights, screens, etc. Sold by the grid cool store