ROSENICE Headphone Ear Pads A Pair of Soft PU Foam Earpads for AKG K518DJ K81 SONY MDR-NC6(Black) Color: mainly black. Material: durable soft foam and PU. Outside diameter: about 75mm; Inside diameter: about 32mm; Thickness: about 17mm. Fully compatible wtih AKG K518 /K518DJ /K518LE /K81 headphones. Also suitable for SONY MDR-NC6 headphone. Soft, durable and highly elastic design, for comfortable to wear on your ears. The ear pads can help to improve the bass performance of your headphone.