90 degree right angles integrated molding , the thickness of the bearing capacity is strong This is an important fastener to join two furniture parts together : Use a drill to dig a hole on the wall or board and then install the screw holders Use a screwdriver to tighten the screw on the brackets This L shape bracket is widely used for any shelf install , such as bookshelf , garden shelf , table , exhibition , chair , external wall brackets Make from Stainless Steel , sturdy and enduring , and not easy to rust, Manufacturer: BULAIDAI