3M Peltor Optime Dual-Cup Earmuff, Red/Black, Ear Muff Style: Hard Hat Attached, Cap-Mounted, Dielectric: No, 27dB Noise Reduction Rating, Material: ABS, Standards: ANSI S3.19-1974, CSA Class AL, Applications: For Assembly, Cleaning, Demolition, Electrical, Facility Maintenance, Grinding, Machine Operations, Painting, Sanding, Welding, Ear Cushion: Liquid/Foam Filled Cushion
- For noise levels up to 105 dB
- Easy cap-mount design
- Liquid/foam filled earmuff cushions
- Noise Reduction Rating (NRR) 27dB, CSA class AL