1、DURABLE CONSTRUCTION: The tungsten electrode sharpener is made from premium alloy, offering high damage and wear resistance. With a smooth, durable black matte surface, this tool is designed by professional welders. 2、MULTIPLE ANGLES AND OFFSETS: Offers 45°, 40°, 30°, and 20° grinding angle options. 22.5°, 20°, 15°, and 10° offsets available for customized electrode sharpening. Allows for precise sharpening based on specific welding requirements. 3、VERSATILE HOLE SIXES: Designed with 4 hole sizes, 0.04in, 1/16in, 3/32in, and 1/8in (1mm, 1.6mm, 2.4mm, 3.2mm), the guide rails ensure concentricity and various sizes offsets, enhancing the utilization of the grinding wheel. 4、CNC PRECISION DESIGN: The precise CNC machining design minimizes the consumption of the grinding disc, and ensures precise grinding angles and pointed edges. 5、STRONG COMPATIBILITY: This welding tungsten grinder set is fit for most rotating tools with 3/4‑12 threads. Ideal for sharpening electrodes used in various welding applications.