1)Product use quality stainless steel 2)For use to reinforce flat surface right angle corner joints Different size can be ... 17×13mm,13×13mm,12×12mm,9×9mm Window Corner Brace advantage:Can be achieved in the group piece set of ... , 70% balance payment before delivery manufacturer metal stamping corner Materialcarbon steel, stainless steel, steel tube, steel rod, aluminium , brass, zinc alloy and etc. ...