Sellstrom S32050 DP4 Series Grinding Faceshield, Black Crown, Shade 5 UV/IR Polycarbonate Window with Ratchet Headgear Convenient system gives you the flexibility to handle various types of grinding, brazing and cutting operations all with one faceshield The shield curves naturally to fit facial contours ensuring reliable protection from splash, particles and flying debris Ratchet headgear suspension allows user to adjust size and tighten at the turn of a knob Meets ANSI Z87.1, high impact standards and CUL certified to meet CAN/CSA Z94.3 standards