Usage Tips:The router bits made of YG8 carbide alloy and 45# carbon steel. These YG8 carbide alloy cutters are more suitable for rough machining of wood products at low speeds. The heat-resistant green coating of the groove cutter set prevents the accumulation of sawdust, resin and asphalt and improves your work efficiency. Please take good protective measures during operation to prevent wood chips from damaging your eyes. Suitable for wood panel, medium density fiberboard, particle board, compact wood board plywood, etc Do not cut ferrous metals and non-wood materials, such as: steel, iron, sand, etc. These router bits are perfect for woodworking, for edging, cutting, trimming, grooves, for refining woodworking projects and ideal for woodworkers and hobbyists of all experience levels. Knife Handle Diameter: 6mm. Includes 7 different sized slotting cutters that meet basic slotting needs in woodworking. (Please pay attention to the size and suitability before purchasing) Features: YG8 carbide blade, more sharp and smooth cutting, impact resistance, high toughness. The cutter is equipped with 'a lightweight plastic storage box in which the cutting head can be stored when not in use to prevent cuts. Suitable for medium density fibreboard, solid wood, wallboard particles, plywood, wooden door frames, wooden window frames, cabinets and boxes, etc. Specifications: Rod Diameter: 6mm Material: YG8 alloy cutter head, 45# carbon steel cutter body, injected surface Color: Green Package includes: 7 x straight cutters Precautions: 1. Please avoid cutting ferrous metals and other hard materials, steel, iron, etc. 2. Take good protective measures during operation to prevent wood chips from damaging the eyes. 3. It is recommended that you do not use glue to cut the composite panel because the adhesive will make the blade black and affect the use of the blade. 4. Not suitable for cutting hard woods such as oak, camphor and birch. 5. Please reduce the speed and feed rate of the machine accordingly to avoid damage to the knife due to too high speed! 6. Due to manual measurement and different monitor settings, please allow a slight error in size and color.