We made these very stout hinges for our friends at Williams Gate Works for a pair of giant garage doors they were commissioned to build. We quickly started calling them castle doors because of their shape and size. We made these hinges out of 304 stainless steel with a black patina and protective clear coat. The black patina gives the hinges the understated look of black steel or iron but with the rust resistance and additional stregth of stainless steel.