... ,HDPE Light weight,Good strength,Good toughness use for working of construction, aerial working Anti-shock Material: ABS, PE, PP, HDPE is availableColor ... : Turning knob (rachet), Press button and inserting is okLock type of chin band: press to adjust, insert to adjust, pull to ... adjust is okSpecific: Withstand a weight of 5kgs falling on to it if dropped 1 mete, can ...