Feature: 1. Professional equipment should be used for sharpening. Do not hold knives sharpening. 2. Super abrasion resistance, strong breakage resistance and long service life. 3. Using high‑quality high‑speed steel material, hard and corrosion‑resistant. 4. Pay attention to the direction of rotation when installing, and use up‑milling. 5. Smooth and clean, greatly improving the cutting effect, suitable for woodworking. Specification: Item Type: Finger Joint Cutter Material: High-Speed Steel Model: 4.0x140x40-4T Weight: Approx. 3185g / 112.3oz Product Size: Approx. 16x0.4cm / 6.3x0.2in Product Hole Diameter: Approx. 4cm / 1.6in Finger Joint Length: Approx. 12mm / 0.5in Scope of Application: Woodworking, etc.. Package List: 1 x Wood Box10 x Finger Joint Cutter Note: 1. The equipment used must be equipped with a protective cover around the tool to avoid damage caused by fragments caused by the damage of the tool.2. It is necessary to start processing after confirming that the workpiece is clamped, otherwise the workpiece is easily caught in the tool, forming a piercing knife, and damaging the tool and equipment; it is also easy to cause the workpiece to fly out and cause an accident.3. The power of the equipment must match the thickness of the processed wood. The power of the equipment is small and the workpiece is too large, which will damage the tool. The knives are idling in the wood, which makes the wood paste and the knives wear and become dull.4. Choose a reasonable feed speed, too fast or too slow will affect product quality and tool life.5. The carpenter, nails and hard objects must be removed from the workpiece, otherwise the alloy of the tool will be broken and severely damaged.