d4E Ball bearing hinge 89x89x2,5mm rounded R10mm SS304 Matt Black L/[R] Din 1, 3 [2, 4 ] reversible d4E comes up with a Ball bearing hinge which is made of basic stainless steel, and has been further refined with a black finish in combination with a matt look. This hinge with rounded corners can be used for right and left handed doors as the pin and end cap can be removed.