Overview【Safety First】For large-size Forstner bits (diameter ≥60mm), it's advised to use machines with excellent stability, like drill presses, bench drills, or vertical electric drills. In case a hand drill is necessary, opt for one with high power and use it in conjunction with a sturdy vise for secure fixing.【Premium Quality】Crafted from top-notch Tungsten Carbide Tipped Cutters and a solid hardened steel body, this Forstner bit boasts high hardness, rust resistance, and enduring sharpness, ensuring its durability and efficiency.t【Specific Dimensions】The Forstner bit features a drilling diameter of 3 Inches (76mm), a Hex Shank Diameter of 15/32 Inch (12mm), a drilling depth of 2-3/8 Inches (60mm), and a total length of 3-11/16 Inches (93mm).【Efficient and Clean Drilling】Equipped with TCT (Tungsten Carbide Tipped Cutters), this Forstner bit set is ideal for drilling into hard wood, capable of creating smooth and precise holes with ease. It's effective in drilling up to a depth of 2-3/8 Inches.【Versatile Usage】This Carbide Forstner Bit is suitable for a wide range of applications, including drilling holes in wood, plastic products, furniture, door hinges, and desks. It's effective on wood, plywood, solid wood boards, MDF, plastics, and more.