Specs: 4 Pcs Top Bearing Flush Trim Router Bits 1/4" Shank, Cut Length:1/4", 1/2", 1", 1-1/2" Premium Carbide: AT03:ULTRA-FINE WC grain size, 94.5 HRA Solid Carbide, 2400N/mm2 TRS, 7.40 SEVNB, ensure long-lasting cutting edge performance and tool life. Applicable Materials: Laminate, Melamine, Melamine Particle Board, MDF, Veneered Plywood, and Wood. Applicable Machines：Suitable for Hand Router, Table Mount Router. Industrial Quality: Aoranto Tool is made in the CHINA, specializing in industrial quality cutting tools for the woodworking, plastics, aluminum, composite, and metal industries. Each tool is equipped with a traceability code, enabling full-process quality tracking. If you have any needs or questions about Aoranto, please feel free to contact us, reply within 24 hours. Aoranto 4 Pcs Top Bearing Flush Trim Router Bits 1/4" Shank, Cut Length:1/4", 1/2", 1", 1-1/2", Useful for Template/Pattern Routing of Parts, Joints, Internal Cuts