Sena HELMET CLAMP KIT with SLIM Speakers suits SF1, SF2, SF4Sena HELMET CLAMP KIT with SLIM Speakers suits SF1, SF2, SF4 A quick Install Helmet Clamp Kit for SF1, SF2 and SF4 models. What's In the Box Clip type Clamp Glued Surface Mounting Plate Wired Boom Microphone Hook and Loop Fasteners for Wired Boom Microphone Hook and Loop Fasteners for Speakers (2) Hook and Loop Fastener for Wired Microphone Boom Microphone Holder Hook and Loop Fastener for Microphone Holder Microphone Sponge (2) Wired Microphone