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—falling 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 softwood and hardwood. 2. Equipped with two spurs and a centering point for consistent, clean, and accurate hole cutting. 3. Sharp center spur ensures precise hole center location. 4. Drills precise flat-bottom holes without chipping in various thicknesses of softwood. 5. Suitable for drilling in any direction and creating arched openings. Ideal for drilling partially overlapping flat-bottom holes for mortising. 6. Designed for use with a power drilling machine. Note: 1. This Forstner drill bit is designed for clockwise rotation only and is not reversible. Operate at gradually increasing speeds from low to high. 2. Dull or damaged tips can reduce drilling accuracy and quality. Maintain sharpness for optimal 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 | | 48–50 | 80 | 8 or 9 | Round | 22 | 55 | | 53–60 | 80 | 9 | Round | 22 | 55 | | 65–100 | 80 | 8 | Hex | 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. Please review all dimensions and sizes carefully before purchase. If you have any questions, feel free to reach out for assistance.