【Flush Trim Router Bit Set】4 flute cutter straight router bit with 8mm shank, cutting height: 30mm/40mm/50mm, cutting diameter: 14mm/16mm/16mm with an top end bearing. 【Industrial Grade Router Bits】Made of high quality C3 Micro-grain Carbide with Teflon Coating for heat-resisting and long-lasting performance. Efficient cuts and extremely durable. 【Anti-Kickback Design】Ideal flush trim router bit with Carbide-tipped edge, 4-flute design help to remove chips and make your job clean and smooth. 【Top End Bearing Router Bits】It contains a enclosed ball bearing for smooth running and accurate trimming cuts for laminates and template work. 【Woodworking Cutting Tool】Use on CNC and other automatic routers as well as hand held and table mounted portable routers. Can cuts all composition materials, plywoods, hardwoods, and softwoods.