Ear Muffs, Earmuff Style Hard Hat-Mounted, Noise Reduction Rating 25 dB, Dielectric Yes, Compatible Manufacturer Model Number H700, For Use With Hard Hats, Cup Color Black/Orange, Series X, Standards EN 397:2012, Replacement Pad Grainger Part Number 21DE27, Features Arms Maintain Proper Shape when Clicking In/Out, Weight 0.4 lb, Electrically Insulated Yes