This listing is for a pack of four top quality, industrial grade nylon plastic hinges with brass pins. Ideal for use outside, when corrosion can be an issue for metal hinges. As fitted as an OEM part by many truck/trailer manufacturers but also popular as a high quality alternative on motorhomes, caravans etc... Designed to be surface mounted with ten countersunk mounting holes (5mm diameter). 180 Degree Opening. Made from a strong, reinforced nylon plastic. Multiple fingers for strength. Made in Italy. 102mm Tall and 67mm Wide.