Electracoustic cymbals feature Transparent Energy Transfer (TE3.2) technology which allows response and feel of an acoustic cymbal while achieving virtually silent operationEcymbal II features bronze metal cymbals for enhanced acoustic feelEcymbal II features highly polished Brilliant finishCustom blended rubber (removable and user replaceable) on 1/3 of cymbal for quiet operation/exact acoustic feelUnsurpassed sensitivity, dynamic range and acoustic cymbal feelMounts on standard boom or cymbal