The trim ring which connects to the factory Hertz trim ring is aluminum and the grill is steel. Both pieces have been anodized in gloss black and look amazing. They can be painted or chrome plated if you so desire. The tweeters are NOT included! The item "HERTZ ST25 1.7 ALUMINUM TWEETER GRILLS GLOSS BLACK ANODIZED 2 PIECE PAINT CHROME" is in sale since Wednesday, July 19, 2017. This item is in the category "eBay Motors\Parts & Accessories\In-Car Technology, GPS & Security\In-Car Entertainment\Speakers". The seller is "sterlingmotorsinc" and is located in Sterling, Illinois. This item can be shipped worldwide.