【Multiple Precise Grinding Angles】 Offers multiple grinding angles including 15°/18°/22.5°/30°/36°/45°/60°, allowing precise adjustment of the tungsten needle tip according to the welding process, ensuring arc stability and aesthetically pleasing weld formation. 【Multi-size Tungsten Needle Compatibility】Supports multiple tungsten needle sizes (1.0/1.6/2.0/2.4/3.2/4.0mm), while also being compatible with imperial sizes. Perfectly suited for various welding conditions such as TIG welding and TIG welding, one machine essentially covers all size requirements. 【Complete Set of Accessories】Standard package includes a full set of accessories such as diamond grinding discs, red-hot grinding heads, wrenches, and fixing clamps. The main unit is equipped with a high-power motor and optimized heat dissipation structure for long-lasting durability. 【Handheld and Portable Design】 The lightweight 26.5cm body eliminates the need for large, fixed equipment, making it flexible for both workshop processing and on-site operations; say goodbye to the inaccuracy and inefficiency of traditional manual grinding. 【Safe and Efficient】The enclosed grinding structure effectively blocks grinding dust, increasing grinding speed by more than 3 times. Precise angle control reduces tungsten needle cracking and wear, lowering consumable costs. It is an essential tool for welding professionals.