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 Boring Jig: Equipped with a V locator that aligns with a center reference line to quickly locate center-drilling points for various hinge brands and mounting plates. Easy to use: Enables convenient and accurate cup hole drilling on cabinet doors or desktops. Ideal for home use, allowing users to quickly find drill points for hinges and mounting plates without professional experience. Multiple use: Compatible with drill press, pistol drill, bench drill, vertical drill, hand electric drill, stand motor drill, and other handheld drilling tools. The drill guide is suitable for woodworking DIY projects or professional applications.