The bi-metal hole saw with a diameter of 78 mm is a versatile tool that is ideal for various materials, including metal, aluminum, plastic, drywall, and wood. With an optimal speed of 75-115 RPM, it allows for precise and clean cuts. The teeth of the hole saw are made from high-quality M3HSS, ensuring high durability and resilience. This hole saw is particularly useful for craft projects and professional applications where reliable performance is required. Weighing only 21 grams, it is also easy to handle and transport. The bi-metal construction ensures that the saw is suitable for both soft and hard materials, making it an essential tool in any workshop.