Material: Tungsten carbide cutting tool with super wear resistance; steel drill bit to meet the high requirements of woodworking and hardware. Dimensions: 8mm Shank; Cutting Diameter: 12mm, Universal: Core Box Bits are designed for reed, grooving, signmaking and general round head grooving. FEATURES: For CNC and other automatic routers as well as handheld and bench-mounted portable routers; it is especially effective on slotted flat surfaces. This drill allows you to cut matching dovetails forprecision and accuracy in drawers and furniture. Shipment Quantity: 5 pieces Package Contents: Only the above package contents, excluding other products. Size: 43*12mm (Reminder: The size is measured by hand, please allow 1-2 cm measurement error) color: red (Due to different monitors and lighting effects, the actual color of the product may be slightly different from the picture color.) Products from GuanGuan's store