I have had an idea for a long time of designing in-ear headphones that would be resistant to falling out when putting a hood on or a helmet on. The idea stemmed from an experience with my father at a car race course. All the drivers were purchasing these strange headphones. They caused them pain and were unreasonably expensive. The only reason they bought them was to ensure they stayed in their ears when they put their helmets on. The idea then occurred to me that I could very easily design something better myself. After, a lot of designing and testing I have come up with a design I am confident will work. However, I have yet to find where I can purchase speakers for these headphones. I have the design, a company to produce them, the cords, but I cannot find a company that will sell speakers to me. What I am looking for is a 6mm diameter speaker that would produce the full range of sound evenly. I would prefer to purchase 100 to 200 at a time. Does anyone know who I can get in touch with to make this happen? Thanks to any and all information.