Description: Highly sharpen,sharp blade 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 wooden door frames,wooden window frames,cabinets frames Tenon together Specification: Material: Body:Solid Hardened Steel Blade:Micro Grain Carbide Bearing:Totally enclosed & lubricated Shank Diameter:1/2" & 1/4" Total Length:2-7/8" Package Includes: 2Pieces Slot Cutter