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 cutting performance. Features: 1. Forstner bit drills clean holes in soft and hardwood. 2. Two spurs and a centering point ensure repeated, clean, and accurate hole cutting. 3. The sharp center spur accurately locates the center of the hole. 4. Drills precise flat-bottom holes without chipping in softwood of any thickness. 5. Suitable for drilling holes 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. Notes: 1. When drilling, operate the Forstner bit in a clockwise direction only; it is not reversible. Begin at low speed and gradually increase. 2. Inspect the cutting edge regularly. If the tip becomes damaged or worn, resharpen to maintain drilling accuracy and performance. Specifications: 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 | Hex | 22 | 55 |