10 pairs of round soft foam headphone ear pads for headphones with diameter from 48mm to 53mm. Specifications: Color: Black Material: Foam Inner diameter: 30 mm Outer Diameter: 50mm Thickness: 10mm Package List: 20 x Ear Pads (Headphone not included.) Note: Please check and confirm the model of your item before purchasing. Compatibility: Headphone earpads: Compatible helmet pad Suitable for Koss Porta Logitech H230 Philips Sennheiser Sony and other brands of many headset models, Here is the reference model: Sony Sennheiser Philips Koss Porta Pro PP PX100 PX80 PC131 Sony MDR -110 Sony MDR-210 Sony MDR-270 Sony MDR-410 Sony DR-BT22 Sony SRF-H4 Sony SRFHM55 Sony TMR-BT 8iPSony MDR-222KD/PIN Sony MDR-IF240RK Sony MDR-G42 Sony MDR-G45 Sony MDR -G52 Sony MDR-NC3 Sony MDR-24 Sony MDR-50 Sony MDR-023 Sennheiser PMX100 Sennheiser PX20 Sennheiser PX100 Sennheiser HD15 Sennheiser HD36 Sennheiser HD56 Sennheiser PC26 Sennheiser PC35 Sennheiser PC141 Altec Lansing ahs 322 Xbox 360 KOSS UR5 Koss KX 4Sennheiser PXC150 PXC60 PXC60 Panasonic RP-HT21 Plantronics 478 Logitech H230 Philips SBC HS500 Creative Labs SL3100 Aiwa HP-A270A.