What is a countersink bit?

A countersink bit is a type of drill bit that is designed to create a conical hole in a material. This hole allows the head of a screw to sit flush with or below the surface of the material, preventing it from protruding and causing damage. Countersink bits typically have a pointed tip that helps guide the cutting action and create a clean, smooth hole. They are commonly used in woodworking and metalworking applications to create professional-looking, flush-mounted screw installations. These bits come in various sizes and configurations to accommodate different screw sizes and material thicknesses. Additionally, some countersink bits come with adjustable depth stops to help control the depth of the hole being created.