ITEM NAME:4pcs Bit Round Over Bead Edge Forming Router Bit Set - 1/4" Shank Description: - Cutting smooth no burr, no edges - High abrasion resistance, high-precision grinding technology, superior abrasion resistance - Unique head design, chip removal more smoothly - The Stacked Rail and Stile Router Bit will cut both rail and stile in a cove design. - Using high-frequency welding technology, strong, durable, and long service life - Purposes for wood, acrylic material edge processing, metal materials can't operation. - Applicable for electric trimmer, engraving and milling machine, CNC engraving machine, CNC machining centers and other machine tools Specification: - Material: alloy, carbon steel handle - Body: solid hardened steel - Blade: micro grain car.Cutting smooth no burr, no edges. - Size: about 1/4" x 1/8" (Shank x Radius). - Body: solid hardened steel. - Unique head design, chip removal more smoothly. - Type: rounded corners. The color may have different as the difference display, pls understand.