- Sturdy Construction: Crafted from premium welded steel with a coating, this 20 gal sand blasting machine ensures exceptional pressure resistance, while the die-cast aluminum alloy sand blasting gun is lightweight, wear-resistant, and easy to handle - Efficient Surface Treatment: Quickly and effectively eliminate rust and stains from iron frames, statues, car paint, and marble engravings at a high sandblasting density of 60-110 PSI, making it ideal for diverse cleaning and restoration projects.