This welding machine can use 2.5MM welding rod for long time work, 3.2MM welding rod can be used for a short time Features: Digital display. The digital display adjusts the current more timely and understands the condition of the welder. Advanced MMA technology, guarantee a stable and large power welding work. High frequency inverter, features quick arcing and less welding splash. Energy saving，Inverter energy saving, first-class energy saving. Current regulation. The current can be adjusted as needed. (20-250A) Specification: Material: metal + ABS plastic Voltage: 220V Current: 20-250A Rated input power capacity: 25KVA Rated frequency: 50/60Hz Efficiency: 92% Power factor: 0.9 Protection grade: IP21 Package include: 1x Arc welding machine Note: 1. Do not use the welder for work other than welding. 2. Do not touchs the live part. 3. Do not solder in places where skimming, cleaning and spraying are required. 4. When using, please bring a protective cover or protective clothing. 5. After a period of continuous use times the cooling period.