5 Pairs COSMOS Quality Replacement 2 inches (50mm) Foam Pad Earpad Cover Cushion for Koss Sporta Pro Porta Pro Headphones Foam pad earpad cover compatible with Models: KOSS Porta Pro, Sporta Pro, KSC7, KSC12, KSC35, KSC75, KTX-Pro1, CX6, UR5, PTX6 etc and other headphones with similar diameter Diameter: about 2 inch (50mm) +/- 1/16" High elasticity, durable, light-weight, soft and comfortable Good for Headphones' diameter ranging from 44mm-50m