Ear Muffs, Earmuff Style Hard Hat-Mounted, Noise Reduction Rating 25 dB, Dielectric Yes, Compatible Manufacturer Model Number H700, For Use With H-700, Cup Color Black, Series X, Standards CSA Class AL, EN 397:2012, Replacement Pad Grainger Part Number 21DE26, Features Arms Maintain Proper Shape when Clicking In/Out, Weight 0.2 lb, Electrically Insulated Yes