SHOWER HINGES - G TO G 180 DEGREE G to G 180 degree shower hinges are hardware devices that connect two glass panels at a 180 degree angle. They are also known as glass to glass 180 degree hinges. They have a dual-action spring mechanism that enables the door to open and close both inwards and outwards. They are usually made of stainless steel, zinc alloy, or brass, which are durable, rust-resistant, and corrosion-proof. Application : Use in Shower Fitting. They have a polished, satin, or chrome finish that matches the glass and the bathroom decor.