TUNGSTEN CARBIDE TIP (TCT) Tungsten carbide is approximately twice as stiff as steel, with a Young's modulus of approximately 530–700 GPa (77,000 to 102,000 psi), and has nearly double the density of steel—midway between that of lead and gold. It is comparable to corundum (α-Al₂O₃) in hardness. The tungsten carbide tip is specially designed to cut clean holes in end grain and thin stock, ideal for boring concealed hinges and door locks. DESIGN WITH CURVE The curved design efficiently removes debris and enhances performance during operation. Features: 1. Forstner bit drills clean holes in soft and hardwood. 2. Features two spurs and a centering point for consistent, clean, and accurate hole cutting. 3. Sharp center spur precisely locates the center of the hole. 4. Drills precise flat-bottom holes without chipping in soft wood of any thickness. 5. Suitable for drilling in any direction and creating arched openings. Can drill partially overlapping flat-bottom holes for easy mortising. 6. Designed for use with a power drilling machine. Please Note: 1. This Forstner drill bit is designed for clockwise rotation only and is not reversible. Begin drilling at low speed and gradually increase as needed. 2. Inspect the cutting edge regularly. If the tip becomes damaged or worn, re-sharpening may be required to maintain drilling accuracy and performance. Specification: Product Name: Forstner Bit Material: Tungsten Carbide Tip (HRC 70) & Carbon Steel Body Package Options: - 5 pcs set: 15mm, 20mm, 25mm, 30mm, 35mm - 11 pcs set: 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, 55mm, 60mm, 65mm Size Chart: | Size (D) mm | Overall Length (L1) mm | Shank Dia. (d) mm | Shank Type | Shank Length (L2) mm | Cutting Depth Max. mm | |-------------|------------------------|-------------------|------------|------------------------|------------------------| | 15–25 | 80 | 8 | Round | 22 | 55 | | 26–35 | 80 | 8 | Round | 22 | 55 | | 38–45 | 80 | 9 | Round | 22 | 55 | | 48–55 | 80 | 9 | Round | 22 | 55 | | 60 | 80 | 9 | Round | 22 | 55 | | 65–100 | 80 | 8 or 9 | Hex or Round | 22 | 55 | Our products are made with high-quality materials and designed for reliable performance. We aim to provide detailed product information in the title and description, including features and specifications. For optimal results, always verify product dimensions before use. If you have any questions, feel free to reach out for assistance.