UP TO 3MM THICK SUS304)] The door hinges are made of extra thick reach to 3MM (0.12) and solid heavy duty 100% stainless steel 304 that provide reliable quality to long lasting use. The extra thickness ensures non-deformed and high weight capability which is ideal for heavy door. [(BUILD-IN BALL BEARING)] There are superior stainless steel ball bearing build-in door hinges which ensure a great smooth and silent revolve. With high quality wear resistant ball bearings, the door hinges will stay silent and smooth which is definitely long-last and durable. So you have no wrong about your door will creak of many years use. [(HIGH PRECISION)] With the high precision production, the gap between pin and hinge is small which also improve the silent-closing efficiently. And the hinge is able to revolve 270deg. [(EASY INSTALLATION)] You just measure the right position, dig the hinge slot, than mounting the screws and finish, easy installation for home repair by yourself. This a reversible design door hinge that you can install to a left hand door or right hand door.