... good .Natural, Nickle Plated, Tin Plated or any coating .Screw,high quality steel (Iron) ,surface : yellow zinc,nickle,white zinc Voltage ... Please send feedback with drwaings ,requirements or specificationsWe are specialized in brass terminals,brass connector, terminal block ,link bar etc. ... NOTICE!!!Price is only for reference .If you are interested in this Item, please contact us for latest price ! ...