1. (Adjustable 45 130 mm for various projects): With a wide adjustment range of 45 130 mm, it offers suitable sizes for both small craft production and large construction projects. The multifunctional design meets the perforation needs of various materials such as metal, wood, plastic, etc., ensuring flexible and convenient use. 2. (Easy cutting of multiple materials using aluminum alloy and ABS materials): Meticulously crafted with quality aluminum alloy and ABS materials, the aluminum alloy part ensures stability and strength of the hole saw, while the ABS material provides toughness and durability. The combination of the two allows the hole saw to effortlessly cut materials like gypsum, plastic, aluminum plates, etc., ensuring longlasting performance. 3. (Tools commonly used in various fields such as woodworking and construction, as well as DIY crafts. Both professionals and general users can utilize it to accomplish various tasks.) 4. (Threeclaw design paired with a compact, portable body): The unique threeclaw design enables quick and easy installation, making the process efficient and smooth. Both replacement and installation are straightforward, requiring no complex tools. The overall design is compact, lightweight, and easy to carry and store, allowing for use anytime, anywhere.