product information Product name: Special type magnesium alloy helmet Brand: Dome Metals Model: Standard/Thickened Color: Red,White,Blue,Yellow Lining: A key regulator that mixed with a plastic line Hat strap type: Y-shaped Material: Magnesium alloy AZ91D Standard hat body: 400g-410g Standard total weight: 500g-510g Application scope: industrial and mining, construction, security, railway Product function: protect the head, prevent falling objects from high altitude, and prevent external impact. Product advantages: The cap shell is made of magnesium alloy die-casting, which meets the national standard GB 2811-2019, and has impact resistance, puncture resistance, low temperature resistance, extreme high temperature resistance, flame retardant, anti-aging, anti-static, insulation, molten metal splash resistance, etc. Features, and the cap body can be recycled. When you buy a magnesium alloy helmet again, you can trade new for old at a low price.