... is 304 stianless steel, inner material is aluminum alloy 1) patch fitting, door clamp, patch fitting series, glass ... 8mm thickness cover, if you want, we can do 1.0mm thickness cover, but price is different.4)Surface ... inner material is aluminum alloy.other details:1) It is suitable for toughened glass door with the frame of ... of glass door.4) it is used for double swing glass door.more details is below: