About this item Foam ear cushions designed for compatibility with various headsets including H251, H261, HW251, HW261, and most standard size 60mm office telephone headsets. The doughnut design allows maximum sound to reach the ear from the speaker. The earpads are covered with a layer of leather for enhanced comfort, and the nylon mesh cover helps prevent dirt accumulation. Packaged quantity: 4 pieces, plus 2 pieces of mic windscreen foam covers included as a gift. Easy to install: simply remove the old earpads and replace them with the new ones. Installation videos are also available for reference. Dimensions: 3.27 x 2.01 x 0.31 inches.