This listing is for a pack of four top quality, industrial grade polyamide plastic hinges with stainless steel 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 three countersunk mounting holes. 135 Degree Opening. Made from a strong, reinforced polyamide plastic. Multiple fingers for strength. Made in Italy. 80mm Tall and 100mm Wide.