Carbon Fibre Speaker Cone 1. 4", 5", 6", 6.5", 8", 10", 12", 15" 2. rubber surround, foam surround 3. yellow,blue,black ... color Carbon Fibre Speaker Cone speaker parts, speaker cone, carbon fibre cone carbon fibre speaker cone1. 4", 5 ... ", 6", 6.5", 8", 10", 12", 15"2. rubber surround, foam surround3. yellow, blue ...