This listing is for a high grade strap hinge. Heavy duty construction. 4mm thick main parts with oversize 8mm diameter hinge pin. Steel construction, zinc plated for corrosion protection. 4 x M6 mounting holes. Up to 270 degree opening depending on application. (180 degree in standard flat mounting) 145mm total length, 59mm width. Precision machined for a smooth operation. Made in Italy.