Two-bar friction hinge/wind supporter for Aluminum window and door use. Color: silverGroove form: square or roundMaterial: Stainless steel 304/301/202Width of the bottom bar: 14.5mmThickness of the four bars: 2.0mm/2.5mm/3.0mmLength: 8''/10''/12''/14''/16'' Selection of materialsSS304SS301SS202SS201 Selection of bar thickness2.0mm2.5mm3.0mm Selection of specification8"(200mm)10"(250mm)12"(300mm) ...