MMD 42-1Article No. 506772 MMD 42-1 2 Spare Parts available Pop protectionProtective cap Choose Spare Part Spare Parts Pop protection$ 3.62 Pop protection MMD 835/935/815-1, MMD 42 Complexity $ 3.62 plus applicable sales tax – free shipping Article No. 538278 Choose Spare Part Protective cap Protective cap Complexity Article No. 554386 Choose Spare Part Attention! Due to the complexity of the repair, some of the spare parts shown can only be replaced by specialist workshops. In this case, please contact your nearest Sennheiser Service Center.