PACKAGING INCLUDES - You will receive 4 different types of trimming cutter heads, 1/4"shank pattern flush trim router bit Cutting length. HIGH QUALITY - Made of high-quality tungsten steel, with coalescing and heat-resistant Teflon coating to prevent wood chips, good wear resistance, and long service life PRODUCT FEATURES - Flat head milling bits with bearings are perfect for all large trimming applications. They are great for decorative wood finishing VARIOUS USES – Can cut all synthetic materials, plywood, hardwood and softwood. Suitable for compact panels such as wood, fiberboard, particle board, plywood, etc.Applicable models: carving machine, trimming machine EXCELLENT SERVICE - If you encounter any questions, you can email us and we will reply to you promptly. We hope to bring you a good experience Made of tungsten steel, not easy to break the knife, the effect is smooth, it is carved large area of the table and rough carving processing.It can not be used in electric drill & drill machines. Specifications:Material: tungsten steelPackage Size:15*10*2cmWeight:170gColor: As shown in the figureQuantity: 4pcsPackaging details: Plastic packing  Note: 1. Due to manual measurement, the size and weight may have a certain error. 2. Due to the difference between different monitors, there may be a slight color difference existed.