North by Honeywell SmoothLok Faceshield Headgear, Series: KHG, Black, Plastic, For Use With: A8153/40 and A8153/60 Faceshields, Ratchet Adjustment.Basic, simple to use headgear with features for all applications of use. A protected mounting system helps eliminate fluids from entering the backside of the faceshield, while an unprotected mounting system offers quick visor replacement. Available with the patented SmoothLok ratchet system or a basic pinlock adjustment system. Patented non-slip ratchet system is easy to use and offers precise size adjustments. The SmoothLok ratchet is available on the KHG4001 and KHG5001 headgear and on the following hard hats: The Matterhorn, Summit, Everest, K2 series and The Peak A69R/A79R.