Was foolishly assumed that LNB's can be connected with 90dB line. I've placed 120dB line. To this end, 8.2mm F connectors are needed. This should be described in the product name. In the detailed description then represents line of 6.5mm diameter. Thus, I could use the Wasserschutztüllen. Therefore not suitable for connection to quad LNB. Otherwise delivery OK, good value for just adequate.