The pack of ten MUP81 Make-Up Protectors from AKG can be used to protect your microphone's cardioid capsule during make-up application. To protect the capsule, simply place the MUP81 over the capsule housing, removing it afterward. Compatible with LC81 MD Reference lightweight cardioid lavalier microphone EC81 MD Reference lightweight cardioid ear-hook microphone HC81 MD Reference lightweight cardioid headworn microphone