3M™ Faceshield, V4KK is our short peak, 1.2 mm thick, scratch resistant, clear polycarbonate faceshield. It's designed to fit 3M™ Hard Hats and provides protection UV, molten metal and against low energy impacts.Get protection from impacts, molten metals and hot solids with 3M™ Faceshield, V4KK. Our short peak, 1.2 mm thick, clear polycarbonate faceshield is designed to fit 3M™ Hard Hats. Meets the Grade F requirements for low energy impact protective shields.