The first step to finding the properly sized cushion/pad for your headset or headphones is to remove the old cushion and measure the uncovered ear piece. If the earpiece is round, measure the diameter. If the earpiece is oval, teardrop or other oblong (off round) shape, measure the longest dimension of your earpiece. Our round, foam ear pads (cushions) will conform to the off-round shape of an oblong shaped earpiece once you install them Compatibility Foam ear cushions designed for: H600, H330, H340 / MDR-G45LP,MDR-G55LP ,MDR-G410LP, MDR-G101LP, MDR-G42LP, DR-220DPV, MDR-G45 ,IF240R,SRF-HM33, MDR-027 ,MDR-222 ,SRF-H4,MDR-NC5 ,MDR-NC6s,MDR-023 / H1030 /CS100 / JHH110 /5091 / HP-CN5 /Axis 502 Headset Black High Quality Sound This headset ear cushion with hole and Nylon cover, donut style allows maximum sound to the ear from the speaker and Nylon cover to prevent dirty Comfortable Wearing Ear cushions made of premium quality foam material, ensure all day wearing comfort and prolonged the life of your headset Easy to Install Easy 2 steps replacement and perfect fit Perfect foam Ear Cushion for Headphones; - Classroom testing - Spa headphones - Hotel headphones - Airline headsets - Libraries - Hospitals - School / College - More