Affordable Router BitsThis router bit set included 7pcs straight milling cutters,7 different size cutters able to meet the basic needs of woodworking grooving. Product MaterialThe router bits made of YG8 carbide alloy and 45 carbon steel. These YG8 carbide alloy router bits more suitable for rough machining of wood products under low-speed operation. Applicable MaterialThe straight router bits using for grooving and trimming wood. Suitable for cutting all composite materials,plywoods and softwoods. Not Suitable For Cutting Hard Wood,such as Oaken,Camphor Wood and Birch etc.. Heat ResistantBuild-up green heat resistant coating prevents build-up of sawdust,resin,and pitch. Improve your work efficiency. Applicable Materials Ideal for common worktop materials such as laminated chipboard,plywood and softwood Working on high speeds or cutting hardwoods may cause the router bit to break If you need to cut hardwood,we suggest you choose a milling cutter with a 1/2 inch shank Specifications Item name: 6mm shank straight router bit set Shank Diameter: 6mm round shank Cutting Diameter: 3mm/4mm/5mm/6mm/8mm/10mm/12mm Color: Green+Silver Weight: 121g Material: cutter head YG8 alloy,cutter body 45 carbon steel,surface sprayed Package includes: 1set*Shank Straight Router Bit Set