[ Material ] - Cemented carbide, superior abrasion resistance; steel bits that meet the high demands of woodworking and hardware.[ Sharp and durable blade ] - High quality alloy blade by heat treatment, strong and durable, balanced precision for smooth operation.[ Feature ] - Use on CNC and other automatic routers as well as hand-held and table-mounted portable routers; it is especially effective for flat surfaces. [ Easy to Install ] - This countersink drill bit is easy to install and maintain, 5 different kinds of size, so it is convenient for you to use it anytime, anywhere.[ An indispensable tool ] - This countersink bit is an essential tool for woodworkers, wide applications for grooving, engraving, cutting, countersinking, etc.Product DescriptionThis router slotting cutter is an indispensable tool for carpenters, wide applications for slotting, engraving, cutting, countersinking, etc. It is usually used on electric trimmers or engraving machines for wood engraving or cutting.Feature:[SOLID AND HIGH HARDNESS] This countersink drill bit is made of high quality steel, it is solid with high hardness, wear resistant and very durable. It is generally used on electric clippers or engraving machines for engraving or cutting wood. [SMOOTH SURFACE] The surface of wood processed by the cutter is smooth and burr-free, which is suitable for hardwoods, softwood, composite panels and other woods. So you can buy it with confidence.[EASY TO INSTALL] This countersink drill bit is easy to install and maintain, 4 different types of drill bits. So it is convenient that you can use it anytime, anywhere. You don't have to worry about the quality. Owning it will make your woodworking life more enjoyable.Specification:Material: Cemented CarbideShank Diameter: 8mmProduct Specifications: 12mm 16mm 19mm 22mm 25.4mmPackage List:5 * Router Grooving CuttersNote:Actual product color may vary from photo due to light.There may be a slight deviation in the measurement of the product