1. Double axle design：Flexible adjustment of the tungsten needle grinding range, precise control of the tungsten needle grinding length, effectively extending the life of the tungsten needle. 2. Angle range of tungsten needle tip：Wide angle 0-60°adjustment to meet various grinding requirements with precise angle. 3. Diamond wheel：The diameter is 90MM. Good arc starting quality and stable arc performance. 4. Protective cover：Prevent wear debris from splashing and protect the safety of operators 5. Wear debris collection groove：The bottom can be rotated to facilitate cleaning of wear debris, Weight: 11.0231131 pounds, Manufacturer: JVDDI