High Quality: The drill bit features ultra-hard alloy for sharper cutting, smooth chip removal, and excellent reaming performance. Hinge hole cutter: 35mm bore diameter. Includes a removable depth stop for easier drilling. Concealed Hinge Bore Jig: Equipped with a V locator that aligns with a center reference line to quickly and accurately locate center points for drilling holes for various hinge brands and mounting plates. Easy to use: Allows convenient and precise drilling of cup holes in cabinet doors or desks using the jig. Ideal for home use and suitable for both professionals and DIY enthusiasts. Multiple uses: Compatible with drill presses, hand drills, bench drills, vertical drills, handheld electric drills, stand motor drills, and magnetic base drills. Widely used in woodworking, DIY projects, and professional applications.