Aluminum speaker shell FOB $3-4/KG 1.material:6063 T5,6061 ... : anodized, etc. 3.We can do as your request Aluminum speaker shell : Product NamePower Coated Aluminum Loudspeaker ShellMaterial6060/6061/6063/6082 ... , punching, drilling, welding and assembly, etcServiceOEM service is workable Good quality Aluminum speaker shell