Features: The 100mm hard alloy hole opener adopts advanced technology and is designed specifically for efficient cutting. Reduced work time and energy consumption, ensuring maximums efficiency for each user during the cutting process. This drill is crafted from high-quality hard alloy, and its lifespans is about 4 times long than traditional steel drill bits. This material not only ensures the durability of the tool, but also enhances its corrosion resistance through plating treatments, allowing it to work stably in harsh environments and ensure worry free long-term use. The equipped positioning drill bit design can achieve high-precisions drilling of ± 0.3mm, greatly reducing the rework rate and material waste caused by positional deviation. Especially in projects that require precise docking, such as pipeline installation or mechanical assembly, precise positioning is important to ensure that every detail fits perfectly. This hole opener is not limited to cutting stainless steel and low-carbon steel, but can also easily handle various materials such as iron, copper, brass, and plastic. Specially suitable for various applications such as the construction industry, automotive maintenance, and home DIY Users only need a few simple steps to complete the installation, without the need for additional tool, and the overall installation time is less than 90 seconds. Suitable for fast-paced work environments, especially in places that require flexible handling of various tasks, such as workshops or homework, allowing users to fully experience the joy of convenience and efficiency. Specifications: Component:Aluminum Alloy Total Length: 101mm/3.98''-102mm /4.02'' Opening Depth: 28mm/1.1'' Hand Diameter: 10mm/0.39'' (Triangular Handle) Package Includes: 1Piece Carbide Hole Saw note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color of the item.