Earpads ONLY Sennheiser HD 350BT 450BT 400S 450 458BT headphones ear cushions
I believe it is also compatible with Sennheiser HD 4.50BT, HD 4.50, HD 4.50BTNC, HD 4.50SE, HD 4.40BT, HD 4.30G, HD 4.20S, HD 458BT, HD 450, HD 450BT, HD 400S, HD 350BT, HD300 headphones. Earpads only.