Filter Masks Respirator Valve Breathable Face Masks: Woodworking, Running, Cycling

Respiratory Valve For Face Mask And N95 Mask Valve Pp
Material:    Plastic
Usage/Application:    N95 mask, Handmade Face mask, Filter, Mask, Breathing Valve
Color:    White
Size:    27 MM or Customized
Working Temperature :   Normal
Max Pressure:    Low Pressure