Passive Earmuff, Earmuff Style Hard Hat-Mounted, Noise Reduction Rating 29 dB, Dielectric Yes, Cushion Material Foam, Compatible Manufacturer Model Number 280-AHS150, 280-AHS150V, 280-EV6151, 280-EV6151M, 280-EV6151MCR2, 280-EV6151S, 280-EV6151SV,...