This is the first series for my new line of Steampunk bras. They all have this same basic shape and details but I make each one sized to fit the individual customer. Some will have a different combination of aluminum, copper, brass and silver. I hand cut each of the gears since I was having such difficulty finding just the right size on a regular basis. I also change up some of the extra cables and fittings a little so that there are no two exactly alike. For sizing details check the link for my fitting site: https://www.etsy.com/listing/231664832/the-metal-bra-sizing-guidelines-charts?ref=shop_home_active_14 and send me those measurements as shown in the pictures or just include them in the purchase notes. Thanks.