This kind of ear pads are replacement for  nc6,for AKG K518 K518DJ K518LE K81 Headphones；ATH ESW9 ESW10 ES10 ES7 72 or 75; Sony MDR-NC6. Features: Donut style design allows maximum sound to the ear from speaker. Function: replace your lost or worn-out ear pad cushions with a new pair. Easy to installation, better quality. Designed to enhance the fidelity of your audio by cushioning the vibrations between your ear and the headset, providing more vibrant sounds. This Earpads comes with PU Leather for extra comfort and upgraded memory foam for noise blocking enhancement. Specification: Item Type: Ear pads Material: PU Leather and Soft Foam Colour: Black, White(Optional) Quantity: a pair Item size:7.5*7.5*2 cm / 2.95*2.95*0.79 in(L * W * H) Package size:8*8*5 cm / 3.15*3.15*1.97 in(L * W * H) Package weight:30g /1.06oz NOTE: Before choosing the size, please increase the installation size of 2-3mm (for example, if your headphone size is 60-62mm, please select 65mm earmuffs) Packing list: 2 * Earphone Cover