They are made by zinc alloy, which owns a better corrosion resisting than cold rolled steel. From what we can see, the opening angle is 270 degree, large enough for you to get everything in the cabinet. It will be 90 degree when we closed the door, some customer may call them 90 degree cabinet hinges. And fixed on–clip on base plate are both available.
Special angle hinges series are being inquired in the last few years, with their accurate, design, and hi-tech with prefect function, to meet all the standards from our lovely consumers. More information, stay with us on www.kavhinge.com.