Features: Made of aluminum alloy, corrosion-resistant, abrasion-resistant, the surfaces is treated with black smooth and durable. Designed by a professional TIG welder. We have designed four hole sizes for you, namely 0.04'' , 1/16" ,3/32" and 1/8"(1mm,1.6mm,2.4mm,3.2mm)The guides ensure concentricity and multi-offset, increasing the utilization of grinding wheel. Fit for most power tools with 3/4-12 thread. A Tungstens sharpening tool has four angled holes on it for use. 22.5, 20, 15 and 10 (45, 40, 30, 20 Tips Angle respectively). All holes designed to use the same height of diamonds wheels. No need to set the height again and again. Easy to aligns the diamonds wheels and the 2mm slit. Specifications: Material:Aluminum Alloy Note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1Set Electrode Sharpener