About this item Compatible Compatible with EncorePro HW530 HW540 HW530D HW540D HW535USB HW545USB Telephone Headsets, P/N 88833-01 Perfect Fit Designed to provide a custom fit, ideal for replacing worn-out earpieces. Material The soft foam pad ensures lasting comfort for all-day wear while keeping your headset fresh and easy to install and replace. Sound Quality The soft foam ear pad allows maximum sound delivery to the ear from the speaker. Package Included Two pack cushion foam for EncorePro HW530 HW540, headset not included. Size: 5 x 2 x 2.7 inches.