Double Efficiency accuracy double edges design enhances wood slotting and edges trimming efficiency, solving traditional single jamming issues Ideal for batch processing of mortise and tenons structures with smooth operations generic 8mm Shank Standard 8mm shank diameter fits most electric routers, trimmers, engravers, and table chainsaws Easy installation with strong compatibility across woodworking tools sturdy Coating Technology blue coating extends tool life with enhanced resistance compared to standard carbon steel cutter Suitable for humid workshops or woodworking environments Complete Size Set This 7 piece set covers 6 20mm cutting needs for various depth slots and edges trimming Eliminates frequent tool changes, perfect for both craft projects and professional milling machines Sturdy Vibrations Control Reinforced body with high concentricity prevents wobbling during high speed rotation Shock resistant design allows prolonged continuous use for professional and craft enthusiasts, Manufacturer: Kaeltsyn