... toughness Petroleum, chemical, power ,construction, mining Material: ABS, PE, PP, HDPE is availableColor: red, blue, yellow, white, black, orange ... type of back hoop: Turning knob (rachet), Press button and inserting is okLock type of chin band: press to ... 1 pc/color box, 30 pcs/CTNDelivery: 60 days after getting depositProduct code GH060DescriptionSafety helmet with V rib with 6 cooling vents on ...