The green SC1 earmuffs are used in general industrial work areas.Suitable for situations with a low to medium noise level (dB) and with medium to high frequency. The yellow SC2 earmuffs are suitable for environments with a medium to high level of noise (dB). The best choice in high frequency noise situations. Suitable for a wide variety of uses such as: building and construction, forestry use, industrial areas, production areas, agriculture, etc. The Orange SC3 earmuffs are indicated for use in low frequency noise situations. Suitable for extremely noisy environments such as: airports, car racing, while using pneumatic drills, etc. Attachment to the helmet with a bayonet adapter (NOTE: All Kask helmets come with with the adapter attached except the SUPERPLASMA WAC00003 Universal 30 mm euro slot Performance differentiated by colour Smooth telescopic size regulation Non-conductive Certified for use with KASK helmet standards CE EN 352 / ANSI S3.19 / CSA
