MB Quart Premium PTK-40 40mm WideSphere Tweeter Kit 40mm WideSphere Tweeter Kit with 50-100 Watt Power Rating and &lt;32kHz Frequency (Sold in Pairs) 40mm WideSphere tweeter assembly that fully addresses the inherent speaker problem of directional sound dispersion in a vehicle Powerful neodymium ring magnet system together with a titanium-based inverted dome 12dB WideSphere in-line crossovers and selectable 0dB, -3dB and 6 dB control Includes two tweeter assemblies, two angle mounting cups and mounting brackets and components for confident and trouble-free installs