Heavy bonnet hinge, 3/8" (10mm) diameter pin, 16 swg (1.6mm) flaps, 75mm across flaps when open, 51mm knuckles. 5ft/1.52m long only. Brass or stainless steel flaps with stainless pin -- heavy bonnet hinge 3/8"/10mm diameter pin, 16 swg (1.6mm) flaps , 75mm across flaps when open, 51mm knuckles 5ft/ 1.52m long only. stainless steel flaps with brass pin Please note: a large parcel shipping fee applies to this product.