MASTER TRI-FLANGE EAR PLUGS Master plugs are designed for easy visibility and manufactured from soft, pliable plastic rubber. While offering a high level of protection against noise, optimum protection and comfort to the ear canal is ensured. Suitable when machining, grinding, metal cutting and woodworking and activities where noise is generated.FEATURES• DB rating: 26DB• EN standard: EN352-2:200MASTER PU FOAM EAR PLUGS Master PU foam ear-plugs are designed for easy visibility and manufactured from soft, pliable plastic foam. While offering a high level of protection against noise, optimum protection and comfort to the ear canal is ensured by the expanding foam. Suitable when machining, grinding, metal cutting and woodworking and activities where noise is generated.FEATURES• DB rating: 38DB• EN standard: EN352-2:2020