H88 20 Pcs 4mm Audio Speaker Wire Cable Screw Banana Plug Connector P20 # 3100170 10 pairs of 4mm banana speaker cable plugs ( 10 x red and 10 x black ) The pin is the standard size of 4mm diameter, fitted for most speakers worldwide The plugs can be stacked with existing 4mm banana plugs Compatible with up to 3mm diameter of speaker cables Screw connector fitting - no soldering required