These intercom headsets are compatible with Terratrip Clubman and Professional V2 intercom amplifiers. They are available for open face or full face helmets and feature noise cancelling microphones for improved communication clarity. Full face microphones have a hook and loop pad on the back for attaching to the inside of the helmet chin bar and open face microphones include a helmet mounted flexible boom for optimum positioning.Compatible with Terratrip Clubman and Professional V2 intercom amplifiersNoise cancelling microphones for improved communication clarityOptions available for open face or full face helmetsUniversal helmet fitting, suits most Motorsport helmetsTerratrip intercom headsets feature a male 1/4" jack plug for connection and may be compatible with other makes of intercom amplifier which have a female 1/4" jack socket.