Instrument control devices manufactures panel mounting type 2 mm banana sockets which are designed to allow 2 mm spring type plugs like sp 5. These banana sockets model bs 2 come in a one piece structure with metal threaded shell for panel mounting. On the other hand socket type bs 2/b is 3 piece construction with unique design in style of bs 5 sockets, which is more sturdy. The both sockets are thermoplastic and availble in a variety of standard colours with brass nickel plated metal parts.