This Carbide Tipped Router Bits designed to cut deep or shallow “V” grooves with 90-degree, also for bevel job with 45-degree；It is used to widely cut V-groove widths from 1/4-inch to 80 millimeters with 1/4-inch and 1/2-inch shank; Made with premium carbide tipped router bits cut all wood composition materials smoothly and it also good for other materials such as aluminum panel，drywall, bakelite, acrylic, plastics etc.; With thick blades can be resharpened many times and tool life last longer; Application of High-strength steel is helpful to prevent breakage of the handle.