1, ABS, PP, PE material
2, Two ribs design
3, Turning knob back hoop
4, Adjustable chin band
5, Also provide button style
Color: red, blue, yellow, white, black, orange
Rib: one rib, two ribs and three ribs on the top of sheel could be done.
Lpck type of back hoop: Turining knob (rachet), press button and inserting is OK.
Lock tupe of chin band: press to adjust, insert to adjust, pull to adjust is OK.
Withstand a weight of 5kgs falling on to it if dropped 1 metes, can be used in low temperature.
Use for working of construction, aerial working, overhead working.