1)Bobbin Material: AL,ASV,KSV,Capton,Glass-fibre,NSV,TIL,BASV,etc. 2)All models and sizes are ... ,we’re investing in the loud-speaker parts as following products:dust cap,cones,spider,basket,terminals,voice coil,magnet kits ... offered and customized accepted.If you are interested in our products, for more information, please contact us! It’s our pleasure ...