Super silent solid steel ball stainless steel waterproof and rust-proof hinge

1.A pair of damping buffer- 10 inch (250mm)250*45*12.5mm

2.A pair of damping buffer-12 inch (300mm)300*45*12.5mm

3.A pair of damping buffer-14“(350mm) 35045*12.5mm

4.A pair of damping buffer-16“(400mm) 40045*12.5mm

5.A pair of damping buffer-18″(450mm) 45045*12.5mm

6.A pair of damping buffer-20 inch (500mm)500*45*12.5mm