Countersinks are specialized cutting tools used to create conical-shaped holes, known as countersinks or chamfers, in the surface of a material. These tools feature a tapered cutting head with flutes that help to remove material as they penetrate the surface. Countersinks are commonly used in metalworking, woodworking, and plastic fabrication to prepare surfaces for the installation of screws, bolts, or rivets. By creating a beveled edge around the opening of a hole, countersinks allow fasteners to sit flush with the surface, improving the overall appearance and reducing the risk of snagging or injury. Countersinks come in various sizes and angles to accommodate different screw or bolt head configurations, ensuring precise and consistent results across a range of applications.